Cheating

So lately my boyfriend been thinking I’ve been talking to other guys (which I haven’t) I asked him where all of this is coming from he said his instincts tell him otherwise so he left his iPad at my house so today I went through his twitter and iMessage (I’m not the type to go through his stuff but I had this gut feeling something wasn’t right) when he was at work I see that he’s been talking to 2 females I’m so hurt don’t know even know what to do or how to confront him about it