I got the most popular for the first two because clearly fucking is how you multiply, and marrying is clearly a form of addition.
Then I got hung up on the last two, because to divide someone is definitely to kill them, but subtraction is like pretty much the opposite of friendship. So I picked addition again for Befriend, reasoning “what’s the point being married if we aren’t also besties”
Ended up with that as my only deviation from the norm. Which is fair because I clearly broke the rules of the game. But it was stacked against me from the start. So whatever.