Been with her for about 1.5 years. Recently (about 2 months ago) she found out that I had cheated on her while I was on vacation. She went nuts when she discovered this, but we both decided that we still wanted to make it work.

Yesterday she left her phone in my car and I did some snooping, not expecting to find anything.

I came across her contact list, and found that she had re-added her ex. No idea if they talked or not, the guy is already in a relationship (his profile was full of lovey-dovey photos of him and this ugly chick).

Should I confront her or just let this go. I have lots of FWB I still keep on my contact list as well, I don't think its a huge deal but this just rubs me the wrong way. Thoughts?