Mary-Sue Couples?

[la_vamp]

I was just thinking and something strange occured to me. Have you ever seen a canon pairing in a fandom that seem so disgustingly perfect? The pairing is overly glorified, completely forced down your throat, hijacks the plot, and does other Sueish things to the plot? The characters may or may not come off as Sueish, but the relationship seems completely Sueish nonetheless.

I don't know. Maybe I'm just cynical.