I woke up to my boyfriend on his phone and then he threw it across the room: Advice?

So I’m not too sure what to do. Last night I and my boyfriend, were hanging out having a relaxing night we go to bed, I woke up in the middle of the night and he was on his phone threw it across the room wouldn’t let me see what he was looking at and then ran in the bathroom deleted whatever he was doing and said all he was watching was porn and didn’t want me to see. I don’t know if I should believe him or not

Have you made a big deal about him watching porn before? If so, his reaction makes sense. If not, that’s a little suspicious to me.