First of all you should not be having it until you are MARRIED and READY TO have kids and want them. If you can answer no to any of these questions then do not have Sexual interaction.......
Can I support and love a child for around the next 18 years and send them to college.
Do I want a child and does my husband?
Am I married and have a job?

He sounds like he is addicted. Stay away from him, from what you said it sounds like you could very easily and badly get hurt!
Good luck!