hi rotosurvivor. i am a lesbian and the way i came to terms with it was that i tried to figure out why being gay frightened me so much. i realised it was because i didnt accept the gay life as being healthy, right, whole, fulfilling etc. and i realised that meant i didnt see gay people as fully equal to straight people. so i started to work on my discriminatory attitude because i hate to discriminate against anyone. i started to work towards seeing gay people as no more disadvantaged or 'wrong' as straight people. once i came to accept gay people more there was nothing standing between me and my sexuality at all. i found myself free to pursue whatever person attracted me. for me that was women. with all that discrimination and inequality out of the way my personal desire became much more clear.
as well as that i tried being with a few guys before and even after i accepted i was gay. for me i found it plain boring. before i accepted being gay as a possibility i thought maybe there was something wrong with me that i wasnt feeling any urge to kiss the guy i was going out with. once i accepted the gay life i realised it was ok to not want to kiss a guy.
what im saying is if you can first try to accept the gay life as no more scary than the straight life and if you can then maybe go on a date with a guy the answers should come fairly easily after that. either you re bored with the guy in which case you re straight or you re willing to try to kiss him and more. in which case... you like the guy! dont label yourself! just go with your feelings. maybe he s the only guy you ll ever like in your life and the rest of your life will be spent loving girls or maybe not. once both lives seem equally valid to you it ceases to matter. you can go after your attraction without any outside interference.
personally i think you should go on a date with a guy because i suspect you will find you maybe have a good time (if the guy is cool) but you ll find you want to meet him to 'support' the cheerleaders at the next football game more than you want to kiss him!
dont fight the thoughts. there s nothing wrong with them. let them come and see how natural they feel. if they feel good go with them. if they make you feel like you re trying to like guys then thats your cue to get bored with them and go back to girls!
just my humble opinion.
good luck to you anyway and take care
biiv