I kissed a girl and I liked it
The taste of her cherry chapstick
I kissed a girl just to try it
I hope my boyfriend don't mind it.
Come again? You hope your boyfriend "don't mind it"? Issues with grammar aside, that is a horrible sentiment! Look, I'm all for sexual exploration. I'm down with the theory that most people on earth aren't entirely one thing or the other, totally straight or totally gay, and that sexuality is more of a gradient or sliding scale than it is a binary code. I myself have a Gay Island of Celebrities, famous people I would think about putting aside my straight-and-narrow ways for. But seriously now. Katy Perry and her ilk of "bi-curious" girls with high school mentalities make me angry, Incredible Hulk style. If you have a boyfriend, you can't explore your attraction to women -just like you can't explore your attraction to other men. That, unless the situation has been discussed and approved of by BOTH parties (and, for my money, actually applies to both parties), is called "cheating". Just because there are two girls involved doesn't make it a lesser offense.
This song, and this behavior, exemplifies the heteronormative ideals of our society. First, there is the assertion that kissing another girl is "not what good girls do"; I would give her the benefit of the doubt and say that she was referring to the cheating, but she already hopes her boyfriend won't mind it and later describes the event as "innocent", so no dice there. Lesbians, therefore, are "bad". And while this girl may think she's being bad by kissing another girl, her plan to return to her boyfriend only furthers the ideology that lesbian encounters are missing something fundamental and vital to a fun and happy and fulfilling sexual encounter: a penis. Same thing goes, by the way, for the girls who think watching their boyfriend suck face with another guy is "hot". Because they don't feel threatened that their boyfriend may suddenly decide that this vagina thing just isn't for him. Songs like this and the behavior it espouses diminish and denigrate the validity of homosexual relationships and feelings. Katy Perry's boyfriend shouldn't worry; she's not going home with a GIRL. Furthering that line of thought is the idea that this encounter is somehow "innocent", and thereby not threatening to the accepted heterosexual relationship. Had her loss of inhibition led to her kissing a boy, the song would probably be a more angst-ridden tune.
And that is the kind of attitude that is absolute crap, that allows men to find two women engaging in sexual acts "hot" as opposed to "threatening" or "disgusting" when two men are engaging in the exact same behavior. Because as long as "bi-curious" women treat their homosexual liaisons as "cute" and "innocent" and "not threatening", as long as these women get hot and bothered and then return to their boyfriends and insist that there is nothing wrong with it, these girls will be doing a disservice to every gay person who seeks to have their relationship considered on par with a straight one.
So, to Katy Perry and girls like her, just stop it. Stop kissing (and doing other things) with girls and then going home with your boyfriend. What you're doing is just greedy, and engages in a horrible double standard. If you want to explore your sexuality, then break up with your boyfriend and actually explore it. Actually treat the relationship you develop with a woman or the encounters you have with a woman as just as important and viable as you would had these occurred with a guy. Otherwise, you're a cheater. And like every other cheater, you're pretty much just an asshole.