I really don't know what's holding back but I really hope you let him know your mind if he truly has a huge impact on you.
You are strong, you will get over it but the memories of the good times will be hard to erase. He might be feeling the way you are as well, you should break the bridge.
You are right. I might be able to get over it, but, the memories will still be there. I'll do something about this. Thank you.