Monoxide_lullaby's fiance used this dusk ball to propose:
We were hiking in a place called the Black Hills. We got up to one of the highest points, he waited until dusk, then asked.
If you truly love Pokémon, this is the ONLY way you will propose to your future spouse or have your rings walked down the aisle.
Samitoo makes his girlfriend a custom video game every year for her birthday, which pretty much already makes him the coolest boyfriend, but this year's game was a little extra special: