u/Amazing_Ostrich_1906

Without getting into too much detail, my girlfriend and I broke up a couple weeks ago. I was already struggling so I felt very betrayed that she left me when I was down. Fast forward a couple weeks and now we want to try to make it work again. However, I slept with someone one time in the month and a half we were broken up. It was a stupid one night stand and I instantly regretted it. Do I have to tell her this before we try to fix it? We were broken up but I know I probably should but I know it’ll break her and probably make her not want to try again.