I dated and ended up living with someone for several years that I shared little in common with. She was twenty years older than me too. She was outgoing and determined to date the shy guy who didn't want to meet in real life. We lasted as long as we did because we did like knowing there was somebody to go eat out with, or see a movie, or take a trip. We had no hobbies in common, and worked different shifts so seldom were awake and at home together except on the weekend, and even then did our own thing except for eating out and sleeping in the same bed.