We like the neat boxes the history of romance has provided: date, fuck buddy, friend with benefits, one-night stand, boyfriend, girlfriend, husband, wife, life partner. We are both 37 however he plays game we have been off and on because of his ability to fully commit to me.
It also had it's bad points -- I was going out with another guy whom I had met before my boyfriend on occasion waterskiing, biking, etc , and my boyfriend saw us one time. I have made excuses not to see him a few times but he always seems to text me when he is in town.
Definition of Exclusive Dating - Bottom line: Be in a relationship where you feel good when you're without him, but you feel even better with him.