It's hard to say. I think we have grown to like things to do together.
Before we met, I still had my huffy 10 speed from 6th grade, it was blue. I was 22, he rode his bike all over and I bought a bike and we used to bike....then we had kids and tried with with the trailer but it wasn't the same. I'd love to do it again as would he but we can't leave from our house since it's all hills to get back to...yep lame excuse! We don't have a bike rack either and there are 5 of us now. If he and I said we were going alone we'd get some groans from the peanut gallery because they'd want to come too!
We both like to sit at the beach and do nothing.
We both vote the same way and generally believe in the same politically, he is a hair more one side then me.
Love Mexican food, when we met, I did not...hmm...I changed a lot for him!
We don't smoke and think it's nasty.
We like some of the same movies/shows but there are many we don't! He won't ever convert me to like Star Trek. I tolerate it now (Netflix) but once the episode is over it's off.
He still hates baseball (all sports) but tolerates going to Yankee games because our kids like to go. It took me about 10 years of marriage and 7 years of dating before I went back to a game!
He isn't overly fond of the mouse because it's $$$$ but he goes willingly and will request certain meals/rides.
It's almost hard to say, we have a lot in common that I can't think of but a lot we don't have in common which is fine.