<human>: Summarize the given text in a few sentences.

I have been seeing this guy for just under 2 years, and the first few months of our relationship he treated me like a princess. Told me every day how amazing he thought I was, etc. Then recently he's been more distant. Strangely so. I feel incredibly guilty, and know this breaks every rule of trust, but I looked at his phone and there was a convo with him and this other girl asking her if she was warm in bed, calling her darling, talking about her working out her body, etc. 

There's no evidence he's cheating, or that it's anything besides flirting over text (and there weren't many messages sent/received) but it still makes me feel sick to my stomach knowing he's saying these things to another (or maybe more) girl, especially since they are things he (I thought) only said to me, or only called me.

I fear if I confront him about it, I'll just look like the bad guy who broke his trust. I don't know what to do.
<bot>: suspected bf of being unfaithful due to him being distant, found text conversation between him and another girl with flirting and calling her names he only calls me, don't know what to do.