It was a challenge to get my spouse into League; he'd never liked laning/turret games, and his laptop was bad at the time. This was season 1. Sometime in Season 2, he finally caved after I told him cool lore tidbit over cool lore tidbit, and promised I'd play some other games with him.
Thousands of games later, he's still playing, still enjoying, has more IP then he will ever need and has played more games then I (we're tied for elo still). We schooled in separate parts of the state, so League was how we stayed connected. It was like a little date, every day. Whether it was grinding bonus IP, or trying to get to that next ranked tier before midnight, we've had a lot of glorious times on this game.
Can't say it's been all sunshine and rainbows, but that's how you grow and learn. I can become really sad after a few losses in a row, and whereas I will play till I win, he'll quit quickly if he thinks he's on tilt. Furthermore, we can rarely lane in the same lane and put our communication to good use; my cs needs work, and he loathes adcs as a rule (no tank masteries, no teleports). I rarely do anything other then support and jungle, myself.
I bring up the bad because we all experience bad points in our relationships, and like a good team fight and a strong game, communication is vital. We always sat and talked about why a game didn't succeed, or why a victory was so intense? We spoke about what we were feeling when we were on a winning streak, as well as how we felt about those terrible five-game-lose-streaks. We spoke, and stayed close, and worked on instead of focusing on how we both were limited in a few roles, how we could work well together despite not being in the same lane.
I think our relationship is over all better for League, as it actually made us confront our teamwork and laning phase issues in real life, as well as in the game. We go into teamfights together, and there's nothing quite like that support, that confidence of knowing how the other person will respond.
I adore him to bits, even if his puns are as bad as Phreak's. I'm glad I got him into this game, and that it's given us such joy over the years.