Relationship advice...mature respectful people only.?

trying to keep this as short brief and detailed as possible. i was with this guy for 6 years and had a child with him. we all know people change and we broke up. i was chillen with a new guy who is friends/aqquanticance with the ex but have many mutual friends. we chilled for 3 months. nobody on his side knew about us besides his family no friends. well i just so happen to fall hard for him. my ex still isnt over me and talks/cries about me to him.. tells him were still messing around. so the new guy says we need to end this for right now. too much stress and this guy isnt over u yet. just give it time. if we were meant to be together we will. i was upset but accepted it. i just found out that the new guy is back with his ex. he said he is giving it a fair shot. but she is super jealous. we still talk because we never really dated and never broke up. idk what we were. he said to me that he could never bring me around her because i am a gorgous girl and she would flip out and cause problems. he said it was his fault for the break up and she is a nice girl... but yet he tells me he wants to rip my clothes off but he didnt. he is a great guy and nothing bad happened between us i think it was just the timimg. we had instanst chemisty and just hit it off...neither of us was expecting it. it hurts so much to think of him with some1 else but its an ex so hopefully there problems re surface again. we had NO problems just the psycho ex. the new guy told me if i didnt have a child with him we would be together. he said my ex will always be in my life and always try and get me back. he will never accept us. but in reality who knows how he will react. so i have a few questions what are the chances of it working with an ex and idk what to do..hold onto him or move on..my feeling for him are super strong. he gives me this feeling i have never had b4. its almost like taking a deep breath and slowing exhale. that feeling u get when u exhale is how i feel with him. idk its amazing and feels so right with him. i have never as u say fought for a guy...normally when one says lets end this it ends and stays like that. but we never officially started to end and like i said no fights or arguments no disagrements. we get along PERFECTLY. its just the ex in the way. our chemisty is ridiculous and clicked from day 1.