If you're going to spend the rest of your life with someone, you kinda want the way you ask them to be memorable. Something that centres around what the two of you share and love. For this couple, it was Super Mario World, so naturally, this guy created a custom level to propose to his lady-love.
If you can get through the slightly nauseating lovey-dovey talk at the start (it's only a few seconds, but you were warned), the actual gameplay is really cute.
The guy made a level filled with super stars, making it impossible to die or fail -- that'd be awkward. He then used coins to spell out love hearts and the "Will You Marry Me?". Aww.
Hopefully this melts your cold heart for the day ahead.