<human>: Can you succinctly summarize the text in 1-3 sentences?

He was selling when we met, but decided to stop after I told him I was not interested in being with someone who engaged in that sort of illegal behavior. We've been together for almost a year. 

Flash forward to today. He's asleep and I'm messing around with his phone (this is not uncommon for both of us to do with each others' phones) when he gets a text that I reflexively clicked. Next thing I know, I've read that message thread and others with people trying to buy weed and prescription meds from him. Whoops.

I'm hurt not only because this is directly contradictory to a fundamental promise at the basis of our relationship, but because he kept it from me. 

I want to discuss it with him but I don't know how because of the fact that I found out as a result of snooping through his phone.
<bot>: Went through boyfriend's phone, found out he was selling drugs again, not sure how to bring this up because of the way I found out