How to get over your first true love?

Jess
I was just in a relationship for two years. We had our ups and downs ofcourse like every relationship does. When we broke up, I found out so much stuff like him lieing, cheating ect. Knowing all of it, I'd still take him back in a heart beat. I don't know even know how to begin to move on. Any advice? I can't put myself back into an unhealthy relationship 😔