Dating someone new after a toxic relationship

I got out of an extremely toxic relationship 7 months ago (cheating, lying, physically and emotionally abusive, drug abuse etc.) and after dating a few people, I’m now seeing one of the best men I’ve ever met 🥰. The problem is I still have trust issues which has led to me being a little crazy at times. I’ve had a conversation with my new guy about this, and he is super understanding and patient with me. He is also 27 and I’m 21, so sometimes I feel that I am just acting childish when I start acting a little crazy. But if anyone has advice of a successful happy relationship after a toxic one, or on what you do to prevent yourself from being “crazy” please comment!!