post break up

hey y’all i broke up with my bf a month ago. me and his ex best friend have been hanging out a lot since then and i kinda like him. i keep telling myself it’s too soon to move on since we were together 1.5 years but he also constantly cheated on me promising he’d change, so by the end of it i was pretty much completely done and out of love with him. am i wrong for moving on too fast? i keep telling myself that it’s too early and if i move on now i never truly loved him (which i genuinely did). just looking for opinions. thanks!