@cocavino
How is your ex possibly impacting on what you do now with another man?
He continues to do extremely cruel things to me. Whenever I start to heal and make connections with someone else, he pops up and reminds me how dangerous it is to get involved with men.
Then respect your own boundaries. If something feels dangerous, stay away from it. Wanting to be over it is understandable, but perhaps a bit like wanting to be 'over' having a broken leg; healing just doesn't work that way. Things you could do before like running up and down stairs will feel too risky for a time.
This is a natural process, and it's not something you can argue with, any more than you can stop winter coming because you'd rather be at the beach.
he pops up and reminds me how dangerous it is to get involved with men
It isn't, though. He's reminding you how dangerous it is to get involved with abusive men. If you have faith in yourself, faith that you will leave as soon as you start feeling something is 'off', you will never get involved with an abusive man again. You will protect yourself properly; like knowing that walking on broken glass is dangerous, but having faith in your glass-resistant shoes. You are the one that has to put the shoes on, because, as much as we all try, we do come across broken glass sometimes.
Respecting your own need to stay away from anything that feels dangerous is something you can practice in daily life, with people or situations that don't feel right. Particular people, particular behaviours of your own, particular conversations, etc. Is that something you're aware of practicing, or do you often find yourself stuck in uncomfortable situations?