Youre not going to like this answer buts its as much his fault as the girls, if he doesnt want to be a daddy he should put a condom on, especially when not in a serious relationship and fooling around with a lot of people at once, pregnancy is not the only risk with unprotected sex. Its nobodys fault but his own and damn right he should help financially support his child even if he doesnt see her. Get the dna test done asap, id also think twice about settling down with him if he was my boyfriend.