Is this a good plot and I need character names?

The Boy 1 seems to be getting off without learning the error of his ways. I don't see how Girl 1 is being a jerk, most girls who find out that their boyfriend was sleeping around would react the same way. She is way to forgiving to be taken seriously. Does he completely forget about girl 2 and the baby he is having with her? I don't think that Girl one would be a jerk, her boyfriend broke her trust and she has every right to be angry and break up with him.