How did you overcome your fear of getting intimate sexually intimate with someone of the same-sex?

Okay I ask this cuz I'm 24 & I think I'm still quite afraid of getting sexually intimate with another guy (namely cuz I've never done it before) but i think that i gotta admit it already that I think I'm attracted to other sexy guys & I have been since my early teens, however I've so far not acted on it ever at least not physically in real life (same largely goes for my hetero attractions too btw) namely cuz I live a pretty solitary life not much of a social life or real life dating with anyone for that matter plus I lack social skills and I'm basically an introvert to this day, I think I'm likely Bisexual but not really sure since I don't really have any real life experience to confirm it, but based on the fact that both sexy guys (more often sexy guys) & sexy girls can turn me on then that's where I get this idea that I might be bi a bi dude, I think I would like to date the sexy guys that I'm attracted to in order to explore my sexuality to see if I really am Bi or Straight, but I think I'm more afraid of dating guys than I am of dating girls, both of which (in theory at least) are options to me since I'm attracted to both, and I live in Canada so if I choose to date guys in the foreseeable future (which i think is something I really wanna do but at the same time I feel like I am still very afraid to do) then this country's quite Liberal so guys dating guys is totally Legal here, I say this to all those who are like - why are u so afraid to date other guys do u live in the Middle East or something LOL.I think I'm likely still somewhat in the closet still since I've so far never really officially came out to anyone in real life about my same-sex attractions, and whenever someone has asked me in real life if I'm gay I always deny it I always say no namely cuz I'm not really sure if I really am gay or maybe Bi or str8, but anyways yeah I suppose I still am in the closet so to speak, it's not really easy to say something out loud like "mom dad I gotta tell u that sexy guys can turn me on too & more often than sexy girls such as hot girls/chicks in bikini or playboy models" its not easy for me to say this in real life (specially since I still can't confirm if I'm bi or straight or even gay due to lack of physical experience in real life).Would you recommend me to finally have the courage to talk about all this with my therapist or psychologist?Thanks in advance to all those who read and reply :)