Have you heard the term "wants his cake and eat it too"? That's what this is. He has his freedom, but he wants you too... he wants the whole field and none of the responsibility. This wanting to sleep with an "ex" (BF or former spouse) IS the norm for them (especially abusive guys.)

Say no. Block his email addy, block his phone number, do not make contact or he will "woo you back" into a relationship in which you continue to suffer.

Just say no.