<human>: I'll keep it short, sorry for formatting, it's on my phone. 
I have been with my boyfriend for over a year, happy, loving, we have a 3 month old daughter together. I had a crappy dream two nights ago that consisted of me bawling because I found out he was leaving me for another woman. 
This dream made me sick and I was having such bad feelings, but I trusted him because he told me he deleted the apps. 
Today while he was napping on the couch I checked his phone, lo and behold, the Tinder app was active and open. I broke down and asked him why he was lying to me. He insisted he wasn't. So I asked him to show me his phone. After he messed around with it he gave it to me, and the apps and history were gone. I asked him why he did that and he insisted he didn't. 
I admitted to checking his phone and then his tune changed, he said he was just looking for people to talk to, he was screaming at me and he was almost about to hit me with his phone. I left with the baby and went to my parent's house. 
I don't know what to do. I love him, I just want to know if my reaction was valid and what I should do? Should I trust him? He hasn't cheated as far as I know, it doesn't add up. I just feel worthless to him. I'm going back home tonight and I'm afraid of what I'll find.

Summarize the given text in a few sentences.
<bot>: Boyfriend said he deleted Tinder and POF, checked his phone after bad gut feeling to find Tinder active and in use. He lied when I confronted him until I admitted to snooping his phone. What do?