You've known this guy for two/three months and he's already dragged you through all this?
Hell to the no. Run. No discussion needed. Block him, change the locks and don't talk to him again.
Then figure out how you "fall in love" with someone in TWO (three?) months and practically (or is it actually) moved him into your house with your son - so this doesn't happen again. Nope nope nope.