Never, ever teach them to snowboard
It’s the cardinal rule of all relationships – don’t teach your partner to snowboard. Do you want to know how many of these relationships have ended with a board being lobbed at someone’s head? All of them.* You don’t want to be on the receiving end of that first miserable day spent mainly on one’s arse. Leave the tuition to someone else, otherwise you might end up like this fella.
* This may or may not be true.