Does this sound like a convo between uncle and his nephew

My boyfriend of a year now has a lot of insecurities... he always goes through my phone and I never went through his until the other night and found this conversation between him and another man who is for sure a gay man.... now I confronted the both of them and they both said the same thing. He is like a nephew and he only wants what’s best for him. But I’m having trouble believing that. Thoughts on the situation?