I've been in a similar position when I've really liked a guy and in the past I would be too scared to tell people and would end up not dating him because I was scared people would question me being bi. But I've kinda realized it doesn't erase your being bi it's just part of the sexuality like you've dated girls you like and you've found a guy that you like and all that matters is that you're happy. As long as you identify as bi you belong in the lgbt community. Idk if this was helpful lol