I'm caught between the two, what would you do? Best advice?

So me and my ex have been broken up for 9 months . He really messed up bad in many ways. He has been trying to prove himself to me alot lately he has changed and came clean about everything and is finally ready to settle down and start a family and focus only on me and our family's happiness.

Or months ago I met someone older than me, also with a child . We have great chemistry but only get to see him once or twice a months for a few hours. He seems to be a bit jelous too, but I do respect that he's honest.

I'm torn. I've had to learn how to do everything for myself as I have no family I can rely on and my ex was all I had and when we broke up and he moved out I learned to love myself. I'm afraid I've become obsessed with being independent I don't want to be come reliant on anyone. .. I can't decide if I'm just scared or if I really do want to give it another go, he was the first person I've ever really loved and my two children love him as well...