<human>: I met this guy through mutual friends a month ago, 3 weeks after he broke up with his girlfriend of 8 months who is now 3 months pregnant. We have become close quite quickly since meeting and have slept together a few times and he wants a relationship with me. I am already developing feelings for him but a number of my friends have suggested that it's a bad idea to be dating this guy because of the baby of the way. They say he will probably go back to the mother, that he's immature, that he's a jerk for leaving her even though he doesn't love her.

Condense the text into a few key points
<bot>: I have begun dating a guy who has a baby on teh way with his ex girlfriend. Is it a bad idea?