Ok.... He's not trying to keep in touch with her. He immediately erased her number from his phone, he defriended her on fb. I asked him to keep her on IM and let me know if she contacts him. I don't know why, I guess like I said - I was looking for some closure. It's really hard to explain some things I've done over those past 6 days, including forgetting my way home, placing my baby's plastic bottle in the oven, etc.
He's been saying that he wants nothing to do with her and he hates her. It was me who wanted that final contact to happen. It did, and I noticed he removed her from his IM contacts (or she did him, either way, after that conversation there will be no contact). I asked him to tell her one more thing and he said 'no, I never want to speak to her again'