can a man really change?

Ok me and my 1st child's father broke up 3 years ago because he was cheating and taking me and the kid for granted even kicked us out his house and wouldn't give me any of my things back. But lately he has been trying to get back with me I would say for about 6 months he has tried to come back, he takes me out to dinner gives me what ever I need plus child support and say that he is trying to show me he cares but I feel like he is trying to buy me back. Well now I am pregnant with another's man baby but me and the dude are not together... He didn't start this I want you back till he found out I was pregnant. He offered me the money for the abortion when I told him I was pregnant and I declined and he said nothing else of it. I am always hard on him he texts me telling me he loves me and misses a lot and I tell him to leave me tf alone he doesn't miss me he had a chance and he fucked up. Now I feel like I have been mean to him he lost his grandma last month and he has no family but his daughter here.. He moved down here in 2011 and hasn't went back to where he is from since. I don't know what I should do. I must add we have did this try again over 10 times we was only 21🤔 Since then he has showed he has grew up.... But i don't want to waste any more time on him. I guess I'm scared and he likes fuss and fight but he says he doesn't do that either