Wtf am i to go i really like this guy but he just had a baby!!please help me i dont know wat to do!?!?

I can't say you are the other woman because from what you say he's really interested in you. If you want to let him go then let him go. These kind of decisions come in life often than you think. The best thing is to let him know how you feel, and if he doesn't want ot make you his number one and only then tell him to just leave you alone all together. No one deserves to be second pick.