How do I know I should jump in the relationship?

Been conflicted on completely trusting this guy.

We’ve known each other for about more than an year but started to seriously talk for 3 months on a regular basis. He’s a guy who respects my time boundaries, fun to talk to, incredibly kind, and been pretty consistent. I think I like him and I think he might like me back. However, he had a rough history. He has a background of his dad often cheating, extended family cheating, and his past exes cheating on him. His extended family and his family also constantly compare each other’s achievements. On the contrary, my parent’s marriage has been faithful and I’ve never been in a relationship before (been scared of getting into one). My close friends say that I shouldn't trust/like him. But, there isn’t a direct reason of what he’s done as to why I shouldn’t. He claims he doesn’t seem like to be the type to cheat nor have cheated in the past and from talking to him it feels like he’s telling the truth. He’s also shared that he wants to live a more peaceful life and get away from the lifestyle he’s currently dealing with.

TDLR: As a person I think our values and chemistry match pretty well. But, his history and background worries me that it’ll cause problems in the future. Is it really worth on possibly getting hurt in the end then?

How do I know I should jump in the relationship?
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