Anxiety/Panic Disorder is very real! I suffered from this disorder for many years before finally being able to overcome it. Living in fear is not a way to live life to the fullest. Give it to God. He can help!
I know that sounds strange, but I fear loving another for just that reason - trust. If the same thing were to happen ever again, I truly don't think I'd be able to come out the other side like I did before. let's just keep it simple, shall we?