Should i text him, let my mate ring him or leave it?

When things like this happen and you're confused, its so tempting to ask the bloke what is going on and make explain, but just leave it, dont contact him anymore. He sounds like a loser and you could do better! If he has a young baby and is not with the mother, it shows that he is useless with acting like an adult (using a condom and trying to make it work with the mother) plus thats a very tricky situation (being a step-mum) to get involved in at such a young age. Steer well clear of this guy!