<human>: Can you succinctly summarize the text in 1-3 sentences?

As mentioned I am currently engaged and I have become aware that my fiancée has been looking up two different ex boyfriends and their girlfriends almost daily this whole time. I called her out on it last night and she was very embarrassed and apologized etc. She told me that there has been absolutely no communication and I believe her.

She mentioned last night that quite possibly the reason she cannot connect sexually with me is because she almost feels as if she is betraying (cheating) her most recent ex. She also said that she strongly believes that she will never have feelings as intense as she did with him, and she made it clear that she doesn't have that connection with me. She did say that the whole thing was silly and she doesn't even know who this person is anymore, and isn't sure why she stalks him.

The relationship lasted less than two years and ended abruptly without much closure for either one of them. I learned this after listening to her last night. I absolutely know that people become curious and Facebook is a very easy way of creeping on people. Hell I'm sure I've looked at an ex from time to time. But what bothers me is what she mentioned in the previous paragraph and the timeline of everything. It's been over 5 years since her last boyfriend!
<bot>: Now I'm not a psychologist or anything: but wouldn't constantly thinking of/stalking your ex hinder you from having those feelings again? What are your ideas to safely get through this?