I think it makes more sense to be happy that someone else has found a good relationship. If it can happen to someone else, surely it can happen to you...
I'm not interested in romance or sex with anyone, so I also don't have much to say about the topic of a romantic relationship. When you're asexual, friendships are your most important relationships, and can indeed be closer than most romantic relationships.
I have noticed that the few friends I have tend to be, in some way, non-typical. I have three friends currently; one has sensory integration problems, another is bipolar, and the third is a very conservative preacher's daughter who almost never wears pants.
The one thing that annoys me very much is that I can't seem to form friendships with males. I often find we have common interests, and that we enjoy talking; but it seems to be accepted that if I wanted to talk to a guy, that would mean I wanted to date him. Most guys shy away from me because they don't want to date me (nor I them), and they don't understand that being friends would be nice, too.
The female Aspie is often socially isolated from other non-typical sorts because females feel and give in to pressure to conform to a certain social standard... non-typical girls often hide their eccentricities; and the non-typical males, more detectable and numerous than their female counterparts, are across that almost insurmountable gender gap.