No, because if this man is straight as you claim, then it's not in his nature to be with another man. You may find him attractive or even fall in love with him, it happens, but you should put some boundaries and respect his nature, knowing the fact that he is heterosexual man.
I had a situation in which a friend from school started kissing and touching me all of a sudden without my consent, knowing full well that I am not a lesbian and it really upset me back then. Therefore, it is not right to act like this. Perhaps it would be better to put your energy into finding a partner who is gay like you.