Married to wonderful person, but I don't think I am in love with him and can't get over former love...?

You are just in a rut. Being married to your best friend is most important. People change so much. Tell your husband what you need and stop contacting this other man. I have been in almost this exact same thing. But you will regret leaving down the road I promiss you that. Try everything before you leave. If you tell him how you feel. He might reallyatep up and sweep you back off your feet. Don't give up.