In the words of Gretchen Weiners, "Ex-boyfriends are just like, off limits to friends" — and that's usually true, in the real world.
Later that year, Taylor Lautner and Taylor Swift met on the set of .
On-screen, they played a high school couple who were totally obsessed with each other, and irl, things were basically the same.
Taylor squared, as they came to be known, dated for just a few months in 2009 before their relationship eventually fizzled.
Selena and Taylor's friendship, however, is still going strong.
You probably don't even remember, but before Kylie Jenner and Tyga were a thing, she totally dated Cody Simpson!