Hmmmm, man we found more than a dozen gay and lesbian couples - not too many singles though (one or two actually). Did you go to any FOD meetings? My partner and I met most while dining, at the spa / pool and just walking around the ship.
I thought this was one of the first cruises where the passenger demographics were between 40-65. I sure didn't have the same experience you did and sorry to hear it didn't work out for you.
Have you tried Carnival? Maybe an Atlantis cruise? Yeah, the disco "scene" on Celebrity is different than on Carnival - not quite the party crowd, which attracts a different demographic.
BTW, I responded to an earlier post of yours (a month or so ago) to meet up and never heard back.