Can ANY one help with my uality?

Im a 16 boy. when i masturbate i fantasize about another dude having with me or jerking off with me (nothing else. not making out or anything else). so i get some toys and continue. i like it but as soon as i shoot a load its like a nother personality takes over and i ask my self "WTF is wrong with you!? this is disgusting!" and whats weirder is after that i recoil from both es! please help! am i gay, bi, strait? and its not an ashamed feeling i just go from the ex stream of being completely horny to the oposit end of the spectrum and get realy realy realy turned off by the same thing i was jacking to. also i went out with a blond chick once *never once any guy*. could not stop thinking about her . we constantly maid out. hugged and talked. i find chicks some what attractive *or at least what i can feel (see my "i feel no love or sorrow. what do they feel like?" question for explanation* but the idea of being ual with her scares me a bit and makes me a bit uncomfortable. im sure though, that when the time comes that i go all the way tat ill be over that uncomfort. i just think it would be weird because its not what im used to seeing when i look down. what am i? bi or strait or gay? im desperate for an answer!