<human>: About 5 years ago, my wife and I were fighting too much and I was drinking too much and we both were not in a good place.  We'd been married 4 years at the time.  She told me she wanted a divorce and kicked me out of the house.

I fought for the marriage and we ended up back together after 4 months and some counseling.  We are doing very well now and are happy and have a good sex life and love each other very much (and I'm drinking much less).

Problem is, when we were separated I noticed a huge phone bill and looked into it.  I saw lots of calls and texts from a number I didn't recognize.  I found out it belonged to a male coworker of hers she'd complained some months earlier of hitting on her.  These calls and texts continued throughout most of our separation.  I confronted her about them and she swore up and down that she was just venting to him and they were just friends and were absolutely not sleeping together.  For the record, I asked; she didn't immediately jump to "we're not sleeping together!".

Like I said, we're together and happy now.  But sometimes, the memory of those months creeps up and I'm devastated all over again.  Most of the time, I'm OK with telling myself she's my wife and I can trust her, but deep down I'm pretty sure she lied to me and it eats me alive.

Can you summarize the given text in a few sentences?
<bot>: My wife was in contact with another man while we were separated years ago. She swears she didn't sleep with him, but my gut tells me otherwise.