I think you can start learning to focus on actions more than words. Actions of this man neither when you dated nor when he broke up indicated deep level of commitment or deep serious intentions. Only his words indicated feelings: telling you he loves you and complimenting you and talking to you. His actions didn’t.

He lied and stole and used you and isn’t paying money back. These are actions. words mean nothing. Engagement also doesn’t really have any meaning all by itself. Asking someone to marry them doesn’t really mean anything unless it’s supported by actions. How could he even consider marriage if he didn’t have a place to live or means to support himself.

Next time when you date, pay attention to what man does, not what he says. Just watch his actions.