The title clearly states the issue.

I tried waving with 10 different characters of mine at a person wearing Brilliant Love: be mine and was unable to get a single brilliant love: I'm yours. My wife then logged in and waved at the exact same person I was waving at and received a brilliant love: I'm yours on each character she tried. Furthermore, the player I was waving at brought in a second character of his and waved at himself on his second character and also received a brilliant love:I'm yours of their own.

It seems I am the only one who cannot get a brilliant love: I'm URS by waving.