There's nothing more awkward than having to work with an ex, especially if it was a difficult breakup. But if these former celebrity couples can collaborate in projects without letting their messy relationship history get in the way, then so can you!

Diane Keaton and Al Pacino

Dated on and off in the early '70s during the production of the first two Godfather films, before reuniting for The Godfather Part III.

Blake Lively and Penn Badgley

Their three-year relationship might have fizzled out during the show, but you would have never guessed it if you caught the ending of the popular TV series Gossip Girl.

Gwen Stefani and Tony Kanal

These band mates called quits after seven years together, and had to deal with the break-up while on tour.

Jennifer Lopez and Marc Anthony

The couple parted ways amicably after 7 years of marriage, but continued to work together on their Latin TV star search, Q’Viva!

Jack Nicholson and Angelica Houston

This iconic couple dated for roughly 20 years before going through a bitter breakup in 1990. They eventually mended the rift by starring in the 1995 film The Crossing Guard (were they played antagonistic exes).

Lucille Ball and Desi Arnaz

Their marriage lasted for 6 seasons on their iconic show I Love Lucy. In real-life, the couple divorced after two decades but still continued to work together frequently.

Kristen Stewart and Robert Pattinson

Fell in love while filming the Twilight saga and dated until Stewart was caught cheating. Unfortunately, their contract required them to publicize the final Twilight movie together.

Katie Holmes and Joshua Jackson

These Dawson’s Creek stars broke up in real life, but still had to carry on with their onscreen relationship.

Jennifer Carpenter and Michael C. Hall

A little twisted, since they played brother and sister in the series Dexter. Their three-year marriage didn't last, but they still had to continue working on the show together.

Gwyneth Paltrow and Ben Affleck

Dated in the late 90’s, and even co-starred in Shakespeare in Love. After the breakup, they were both cast in the romantic drama Bounce.

Ian Somerhalder and Nina Dobrev

This Vampire Diaries couple made sparks both on-screen and off for three years. Despite their breakup, they seem to be getting along well now that the show is heading into its fifth season.

Jennifer Garner and Michael Vartan

Dated in 2003 for about a year, but their relationship ended long before the show did. That working relationship must have been super awkward, especially since their characters ended up marrying each other.

Kaley Cuoco and Johnny Galecki

The co-stars dated in secret off-screen for nearly two years, but managed to remain friends after their real life romance ended. Their characters are still dating on the show!

Sophia Bush and Chad Michael Murray

Fell in love while shooting One Tree Hill before getting married in 2005... then divorced six months later. But they still had to go to work every day and pretend to date on the show.

Elizabeth Taylor and Richard Burton

The most famous on-again, off-again couple in cinematic history, Taylor and Burton have been married and divorced twice. Despite all their drama and turmoil, they still managed to star in the 1976 film Private Lives.