Cheating But Not Caught pt2

I. Posted "My BF[22] of 4 years, has been getting on Grindr" blah blah blah. We it may or may not be wrong but I created an account and I've been talking to him. Doesn't know it's me. But is this wrong. And Judy so you know. He initated the taking not me. He was quick to send pics and tell me what he wants to do to me. What should I do. Call him out or just delete the account or just let things play out and sweat it out of him.