The Kaitlin Olson and Rob McElhenney relationship timeline begins on the set of It’s Always Sunny in Philadelphia in 2005 and, as of the latest coverage we found, is still going. They kept their early romance secret from their castmates, got engaged in December 2007, married on September 27, 2008, and have two sons. Because the couple has told the story in many interviews over many years, details differ between outlets. This guide gives the confirmed milestones, points out where accounts disagree, and says which source each fact comes from.
Quick answers
- Met: 2005, on It’s Always Sunny in Philadelphia, where Olson was cast as Dee and McElhenney already played Mac.
- Started dating: 2006, in secret at first.
- Engaged: December 2007, at Danny DeVito’s beach house in Malibu.
- Married: September 27, 2008, at a vineyard in Malibu, California.
- Children: two sons, Axel Lee (born 2010) and Leo Grey (born 2012).
- Still married? Yes, according to coverage from mid-2026; their 18th wedding anniversary was September 27, 2026.
Kaitlin Olson and Rob McElhenney Relationship Timeline at a Glance
| Date | Milestone | Where it comes from |
|---|---|---|
| 2005 | Olson joins It’s Always Sunny in Philadelphia; the two meet | People (via Yahoo), Hello! |
| 2006 | The relationship begins and is kept secret from castmates for a time | People (via Yahoo), Hello!, Parade |
| December 2007 | McElhenney proposes at Danny DeVito’s Malibu beach house | People (via Yahoo), Hello! |
| September 27, 2008 | Wedding at a vineyard in Malibu, California | Hello!, Parade |
| September 2010 | First son, Axel Lee, is born | Parade, Yahoo |
| 2012 | Second son, Leo Grey, is born | Parade, Yahoo |
| June 2025 | McElhenney announces he will use the name “Rob Mac”; Olson says the kids aren’t thrilled | Parade |
| September 27, 2026 | 18th wedding anniversary (our calculation) | Calculated from the 2008 wedding date |
How Did Kaitlin Olson and Rob McElhenney Meet?
They met through It’s Always Sunny in Philadelphia. McElhenney co-created the series and plays Mac, and Olson came aboard to play Dee. Olson has said her audition did not go smoothly. She told BuzzFeed in 2015 that McElhenney had to be talked into hiring her, a story People repeated in its relationship timeline. AOL’s coverage adds that Olson didn’t think much about her future husband at the audition, while McElhenney’s experience of meeting her was different.
For anyone curious about how roles like this get filled today, see our guide to how actors get cast in 2026.
Where the accounts differ
Most outlets, including People (via Yahoo) and Hello!, say they met in 2005. Some smaller sites place the audition or Olson’s “first move” in different years. We use 2005 for the meeting and 2006 for the start of the relationship because the larger outlets agree on both.
When Did Kaitlin Olson and Rob McElhenney Start Dating?
Reports place the start of the relationship in 2006, during the show’s second season. Parade and Yahoo say McElhenney initially held back from a romance because he was now her co-star and her boss. He has said he recognized the power dynamic and thought it would be inappropriate. Hello! reported that Olson told Dax Shepard on Armchair Expert in 2018 that McElhenney wanted something casual at first, which she found funny because she could tell he was already in love with her.
After dating in secret for a few months, according to Hello!, they told their castmates.
How the relationship started: two versions
Two versions of the moment circulate, and we could not confirm either from the couple directly:
- Game night. People (via Yahoo) say Olson made a move on McElhenney at a game night at the home of castmates Charlie Day and Mary Elizabeth Ellis.
- A castmates’ wedding. A Yahoo article from earlier this year says they officially became a couple in March 2006 at the wedding of Day and Ellis.
Both versions involve Day and Ellis, and both are in 2006, so the timeline is consistent even if the exact scene is not.
When Did Kaitlin Olson and Rob McElhenney Get Engaged?
McElhenney proposed in December 2007 at Danny DeVito’s beach house in Malibu, per People and Hello!. DeVito, who plays Frank on the show, was a friend as well as a castmate. McElhenney told InStyle in 2008 that Olson loves the beach when the weather is cold, which is why the location suited her.
When Did Kaitlin Olson and Rob McElhenney Get Married?
They married on September 27, 2008, at a vineyard in Malibu, California, according to Hello! and Parade. In a 2008 InStyle interview quoted by People, Olson said they wanted the wedding to create as little waste as possible, using herbs and berries as decoration instead of flowers.
Do Kaitlin Olson and Rob McElhenney Have Children?
Yes. They have two sons: Axel Lee, born in September 2010, and Leo Grey, born in 2012, according to Parade and Yahoo. The couple lives in Los Angeles, per the same coverage.
In June 2025, McElhenney said he would legally and professionally change his name to “Rob Mac” because “McElhenney” is hard for international fans to pronounce. Olson said at the time that the kids were not happy about it, Parade reported.
Are Kaitlin Olson and Rob McElhenney Still Married?
Yes. Parade and Yahoo, in coverage updated in the first half of 2026, say they are still married after almost 17 years. Using the September 27, 2008 wedding date, they reached their 18th anniversary on September 27, 2026 (our calculation). Hello! reported that rumors of a split circulated in 2023 and were dismissed after Olson addressed them with humor. We found no credible report of a separation, and neither has announced one.
Kaitlin Olson and Rob McElhenney Timeline by the Numbers
These figures are our own calculations from the dates above:
- About 20 years together, counting from 2006.
- 18 years of marriage as of September 27, 2026.
- Less than two years between the start of the relationship (2006) and the December 2007 proposal.
- About two years between the births of their sons (2010 and 2012).
Kaitlin Olson Net Worth 2026: How Sweet Dee Built a $20 Million Career
A Workplace Romance on the Set of a Long-Running Show
It’s Always Sunny in Philadelphia is a long-running comedy, and the couple’s story is part of its lore. What stands out in their own telling is how openly McElhenney has acknowledged the imbalance of being her boss while falling for her, and how Olson treated the early “casual” label with humor. Both accounts come from interviews relayed by Hello! and Parade, not from the show’s producers.
How to Check a Celebrity Couple’s Timeline
This couple’s story shows why details vary. Four quick checks help:
- Prefer the couple’s own words. Interviews with InStyle, BuzzFeed and Armchair Expert are the original sources for most facts here.
- Count how many outlets agree. The years 2005, 2006, 2007 and 2008 are consistent across large outlets; the exact “first move” scene is not.
- Note the date of the article. A page written in 2020 may not say whether a couple is still together today.
- Be wary of “dating rumors” posts. Unconfirmed claims about affairs or splits are not facts, and we do not repeat them.
Frequently Asked Questions
What is the Kaitlin Olson and Rob McElhenney relationship timeline?
They met in 2005 on It’s Always Sunny in Philadelphia, began dating in 2006, got engaged in December 2007, and married on September 27, 2008. Their sons were born in 2010 and 2012.
How did Kaitlin Olson and Rob McElhenney meet?
They met through the show. Olson was cast as Dee, and by her own account, McElhenney had to be convinced to hire her.
When did Kaitlin Olson and Rob McElhenney get married?
September 27, 2008, at a vineyard in Malibu, California.
Where did Rob McElhenney propose to Kaitlin Olson?
At Danny DeVito’s beach house in Malibu, in December 2007.
Are Kaitlin Olson and Rob McElhenney still married?
Yes, per coverage from 2026. We found no report of a separation.
How many children do Kaitlin Olson and Rob McElhenney have?
Two sons, Axel Lee (born 2010) and Leo Grey (born 2012).
How long have Kaitlin Olson and Rob McElhenney been together?
About 20 years, counting from 2006, and 18 years married as of September 27, 2026 (our calculation).
Who do Kaitlin Olson and Rob McElhenney play on It’s Always Sunny?
Olson plays Dee, and McElhenney plays Mac, per Parade.
Why is Rob McElhenney changing his name to Rob Mac?
He said in June 2025 that “McElhenney” has been difficult for global audiences to pronounce, according to Parade.
Kaitlin Olson and Rob McElhenney Relationship Timeline: Summary
The confirmed Kaitlin Olson and Rob McElhenney relationship timeline has five anchor points: they met in 2005, started dating in 2006, got engaged in December 2007, married on September 27, 2008, and welcomed sons in 2010 and 2012. The only real disagreements among sources are small: the exact scene of how the relationship began and, on a few smaller sites, the year of the first meeting.
