Teen  Mom 2 star Kailyn Lowry has obviously dated men before (see, as evidence: her 2 year-old son), but don't think she can't swing both ways just because she's a mom. A source close to Kailyn claims the young mother has not only hooked up with girls, she's had long-term lesbian relationships both before and after getting pregnant.

“Kail was with a girl named Shelby … for about two years,” says the source, adding that she broke things off with Shelby to date baby daddy Jo. Apparently unsatisfied with what Jo had to offer, Kailyn then cheated on him with a girl named Gigi Hanna. How did Jo feel about Kailyn playing for the other team? "He knew and didn’t care,” says the source. A teenage boy is cool with his girlfriend being bisexual?! Alert the media!

Hanna has publicly confirmed the relationship, saying that she and Kailyn were on and off for years and rekindled their romance after she gave birth to son Isaac. “We became close again and promised to never leave each other; we moved in together,” says Hanna, adding that they were careful to keep their relationship private (until now, apparently).

Well, I guess it's a good thing Kailyn isn't into girls, exclusively. Otherwise, she never would've gotten knocked up and become a reality star! Learn from her shining example, young lesbians. You can always go back to the ladies after you become famous.