Hey so boy advice needed

Hey so i was dating this guy from last year January, we broke up 2 days before we celebrated our 1 year 5 month anniversary. We broke up, and the relationship was really toxic, it wasn't his fault it was both of ours. I really want him back but my friends say i should move on, we both cheated on eachother now i know you probably think im crazy I cheated first but it was peer pressure and his best friend told me sbout him cheating a year later. I really do miss him mot the thought of him or anything like that. How do i get him back?