Get a girlfriend. Go down on her. Finger her ass while you eat her. Ask her to suck your cock. Talk to her, tell her what feels good and what to do.
Don't be sneaky about sex. Be open about it.
You can jack off whenever you want. Getting a girl takes effort.
The other dude is correct, wanting to sneak cum into a girl is just your hormones talking. You have to do anything sexual consensually. Otherwise it's basically rape, making you a rapist. The up-side is that girls want sex as much as you. You just have to find the right one. My experience is that overweight or unhappy girls want sex the most. Be careful though, girls get emotionally very attached. Putting your dick into a crazy girl can lead to a bunch of fucked up drama.
Find someone you like. Shared interests, appearance, whatever. Then ask her out.
You shouldn't give up. Everyone wants sex as much as you do, it's just that you're inhibited.
Whether you have sex with a boy or girl doesn't matter. You need to get close to someone and make a move on her or him. Don't try too hard, being easy going and casual makes you more attractive.
Alcohol or weed will help you lose your inhibitions. I always have the wildest sex after drinking or the next morning waking up.
It's your purpose in life to fuck. You should definitely find someone. If I were you I'd find the "weird" guy and tell him about your dream. I bet you'll be sucking each other's cocks in no time.
I have never had a gay or bi relationship, but I think about cocks. I think sucking a cock and taking a cock in the ass sounds amazing. But I'm a pretty sexual guy. I really love women's asses. I like to be very dominant or very submissive. They both get me off.
I masturbate quite a bit and love to eat my girlfriend's ass and jack off. I'm not into dudes but I fantasize about cocks in my mouth and ass, as much as fantasize about eating women's ass and pussy. It's funny because women turn me on, but a stiff cock sounds so fun to play with.
I've masturbated right up to coming and then rolled upside down and finished off on my face and in my mouth. I usually get grossed out afterwards, but it's an amazing feeling having cum hit your face and mouth. I think about eating it during sex, but rarely want it after I actually cum.
I just ate my gf's ass I spit on her hole and sucked it up several times pretending it was cum. Totally got me off. By the way - she loves it when I eat her ass.
Dominant, submissive, or just kinky. It's great to have her ass on my face.