Ah yes. Lesbians turned bi by the power of THE D, because a girl being into other girls isn't about sexual orientation, it's just a sign of immaturity. Now that she's getting older she needs to drop such a childish thing and graduate to a Real Relationship With A Man. Totally makes sense.

Stupid plot but kinda weird that a penis turned her bi

There ain't nothing weird about it. I've lived it and it makes perfect sense. Had a chick hate my guts because I dated someone she liked and with the power of a piggy back ride that was all she wrote lol