Nah I reckon he does it all the time, I mean sunsets happen every day, but mostly behind the clouds, or the hills, or a sky scraper, so unless he gets down on 1 knee at the same time... it aint good enough for me.
PS the girl looks like the same girl on the making of the vid so a co-worker I say, there is NO WAY he would let it slip like this he's been way too careful in hee past so he aint gonna make THOSE kinda mistakes THAT easliy