Took my bf back but now I get flashbacks

I got back with my boyfriend after it cost me a long time to forgive him. Now, we are good. However, I get flashbacks of all of the bad shit he has done to me years ago. From finding him messaging girls, leaving me stranded at restaurants when he’s drunk, and much more I’d rather not get into. Whenever I’m with him I don’t think of these things. It’s only when I’m alone at my parents house ( we don’t live together ). These memories really make me doubt my being with him, but when I’m with him it’s a different story.

Do these thoughts ever go away???