How do i know who is right boyfriend? (gay)?

so there is a guy A and guy B and guy B gives you safeness and trust and niceness. you know the really nice guy. guy B is the bad boy. who has a hard front but when we talk he lets me in and tells me what he can. but guy A i know is stable but guy B not really he is involed in stuff that you cant speck of. but he gives me that thrill? you know? so idk i mean i cant pick... pls i need someone to help me D: