Girl Problem HELP!

There's a situation where I have a girlfriend and her best friend likes me, who's sister also likes me. I need help on how to make a girl not like me. My gf's bff sister has attempted to kiss me. She's bisexual and I think I like her more than my gf. I've asked her is she was single she said its complicated but she does like me and wants to be more than friends. I want to go out with her but I don't want to ruin my relationship with my gf is her bff sister isn't ready. Now my gf's bff also likes me she's tried to get em to have sex with her but I don't like her. I told my gf about her she's gonna dosomthin about that today. Now back to my real problem. Should I break up with my gf so I can go out with the bisexual which oddly for the first time in my life I have feelings for.

If you are hot for the bisexual sister, then your girlfriend isn't your real girlfriend and her best friend isn't her best friend if she likes you either.

Dating and relationships are only part of life. There are these issues of getting an education, learning some skills and becoming a productive member of society. None of that will happen while you're living in the hormone fog you describe above. You need to back off and think about what's important in a relationship like caring, honesty, trust and commitment. Set some goals and priorities for yourself.