"Best friend."

I hate it when people say they got engaged/married their best friend. You should really not be sleeping with your best friend, kinda makes that person not your friend anymore, right? (Hint: because they're your lover.) Or you're just a loser who doesn't actually have friends outside your partner. Or you're not having sex with your partner which is far, far worse.

I love my boyfriend, we have lots of sex, we share a lot of ourselves with each other, but he's not my best friend. I've got my college BFF among other close friends to fill that role in my life. It's called boundaries people! They're healthy and you'll wish you had them when you end up divorcing your best friend.