Met this girl about 2 months ago. Started seeing her a lot and she was all over me. Great body, great sex. She told me she had a really bad breakup with her ex, bad enough that she had to go on medication because he wasn't ready to get married to her (they were extremely close however). Things moved extremely fast with her. She told me her ex was still bothering her when we first started dating, but she hasn't mentioned it once since. Yesterday she was very hot & cold with me, and after she fell asleep last night I saw she has secretly been emailing and calling him (she blocked him through text and phone, but seemingly she still calls him and emails him). Here is the transcript essentially. Is this like an instant ghost or can I lay down ground rules now?

him: Is me talking to you making this too hard for you? I will stop.

her: What hard? Nothing is hard anymore

him: Seriously? You break down crying everytime we speak.

him: At gym, missed your call - call back

her: I'm sick call me

him: You're sick? Your boyfriend has no idea what he's in for

her: very funny, not funny

him: I miss you a lot.

her: I'm sorry.

him: You really never want to see me again?

her: Not at the moment, I'm not sure if things could ever be the same

him: I think you'd be surprised

her: Well I don't think emotionally I could handle you leaving me again

him: This sucks, I understand

her: This has sucked for 6 months!

him: Should have just moved to Australia with you in November

her: Yup! Should have never broken up

him: Trust me I know. I think I've dreamt about you every night for 3 weeks straight.

her: :( definitely the one that got away

him: I am?

her: Yup.

him: People used to think we were married.

her: Yup!

her: He's on his way over I'll call you later.