You can't MAKE anyone do anything they don't want, and you shouldn't try. Especially not the ones that you care about. You can share your interests and if they take an interest in it, too, awesome! If not, that's okay too. If your other half cares about you, they would at least accept you for who you are regardless of what you enjoy doing, like poker... unless it's causing you or someone else harm. So, if you're losing large bits of money in poker and don't know when to stop, then that would be a problem. But if you're not, then if they really care, they'll accept you being a poker player.