my bf dreamt of me cheating

Renee • Just a girl in love.
He said it's been messing with his head all day. Usually I'm the one having those dreams and paranoia. He's usually more secure of me and doesn't worry.. so he claims. But idk now. I feel like his reaction to this dream tells me he's worried about losing me?  I'll also note that we were both victims of someone cheating in our previous relationships before we met eachother. Any thoughts or ideas? He said he doesn't need reassurance so I'm not sure what else to say. He says he is trying to communicate what he's feeling which is mild paranoia.