advice please

Hi all

i've always thought that i was straight but over the past few years i've been questioning my Sexuality , i do find some other guys attractive but cant see having a relationship with them ( should be some indication right ? )

but heres the kicker, due to a terrible lack of confidence / self esteem, i have never had a relationship with a girl either, nor do i see myself having one (confidence issues again)

you see i always thought that my lack of "luck" with the opposite sex was due to my low self esteem, i mean i still do find some girls attractive, but not when i do, i don't turn to my friends and say so, it seems to me that when most guys see a girl they just turn to their friends and say " wow look at the ******* on that "

i dont think i ever had that type of reaction, it just seems to me that such behavior is just crappy, then again maybe thats just my personality

but in questioning my sexuality i remembered times where i noticed other guys
sometimes it was some random actor on tv or some place else (i guess one of the examples that stand out the most, was when i was a kid in school, and i saw this other kid in class, and when i saw him i just went...i dunno it was like i skipped a breath )

sure i do fantasize about other guys, but thats not reality

if it where reality, i'm not sure if i could or would do anything

maybe its just my lack of self esteem again (theres a whole other story behind that, and its not a nice one, but i'm getting help for it )

but i guess here is my question ?
could i just be gay and not have the confidence to be comfortable with it