After Justin Long began working in Hollywood, it was inevitable that one or two gorgeous leading ladies would catch his eye. Although the actor has never been married, he's certainly had his fair share of high-profile romances. In 2002, Long was spotted on the town with actor Kirsten Dunst and dating rumors immediately began to circulate. Although the pair never confirmed the romance, they were seen showing some PDA around Hollywood, per Showbiz Cheat Sheet.

In 2007, Long began dating well-known actor Drew Barrymore. The pair met on the set of their film "He's Just Not That Into You," which co-starred an impressive cast, including Jennifer Aniston, Scarlett Johansson, Bradley Cooper, and Ben Affleck (via IMDb). The couple dated for three years before calling it quits in 2010. However, the duo are still friends.

After ending his relationship with Barrymore, Long began dating actor Amanda Seyfried. The two met through mutual friends in 2013, per ABC News. Seyfried later admitted that she began following the actor on Instagram because she thought he was "really funny." The couple dated for two years before calling it quits in 2015. The Things reports that the duo simply grew apart, but that there were rumors that Long wanted to get married and Seyfried wasn't ready for the commitment.