If I had a baby with a guy that made me a single mom, should I give a guy a chance that clearly likes me but has shown to have some "nice guy" traits?

We talked off and on for years and he has returned again. Last time we talked it ended in a falling out. He felt I was playing games with him but I was talking to someone else and I wanted to be just friends with him
If I had a baby with a guy that made me a single mom, should I give a guy a chance that clearly likes me but has shown to have some "nice guy" traits?
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