When you love someone what they look like isn't really important, but the real question is how do you come to love someone you don't find attractive. If you never want to have sex with them what's the point.
When I did Track I always hung out with and befriended the throwers, guy and gals, they're good people, but they're not the most attractive bunch. I had to tell one girl, Abby, that I didn't find her attractive after she kept pestering me for a date.
I will befriend damn near anyone, but a intimate relationship requires intimacy and that in turn requires a baseline physical attractiveness.
It still kills me that my best friend in college is a lesbian, she the hottest, geekiest girl I've ever met. We love each other's company and spent damn near everyday hanging out with each other but she doesn't find me attractive, "Your OK for a guy", are her exact words...
I've been on both sides, it's sucks telling someone you like that you don't find them attractive, but what you gonna' do? (on a positive note, a hot lesbian is the best wing man; we traded a lot of "Are you kidding she was looking at me"'s).