what is your partners Favorite habit?

Ok, Reddit this is going to sound kind of strange, but fuck it I'm going to say it anyway; I love that my boyfriend does not have sweaty balls when I go down on him. I love that he takes a constant effort to wash his balls thoroughly in the shower. It makes our sex so much more enjoyable. Knowing that he keeps his body (as well as his balls) clean. What's your significant others favorite habit that isn't something people don't normally know about the person?