Don't know what to do- Please help

[limbo]

My H tells me this morning that the ow has been contacting him for several months now...although he swears on the life of the children he hasn't seen or been with her again.
He admitted he thought he could work this out him self and it got out of control, he also admitted he doesn't know why he can't stop the contact.
He told me because he owes her money and threaten to tell me. I emailed her and told her to leave us alone, and this is the email I got back

thank you. that's all i wanted to hear. i do want to get on with my life, that's why i want your husband to stop contacting me like he does and has for going on 4 years.

i had to use you to get through to him. it seems to have worked. i am also willing to meet you if you'd like to explain in detail. if you don't, that's fine i don't really expect you to.

sometimes us crazy people have to resort to drastic measures. my apologies about that. if you still want to see any email from h, let me know and i will forward it.

if this email really is from you Limbo, thanks for listening.

so I just don't know who or what to believe, should I ask her for the emails, I just don't know, as you can imagine I am low and confused right now!

So help would be apperciated!