There are no official gay bars in Dubai - though one of the hotels (I can't remember which one) by the Corniche had a gay night (the Hyatt?) .

Your best best is to try the local internet sites and connecting with people. When I mean internet sites - there are a few that pass though the UAE censors. The popular european and american ones are all blocked.

Most gay life is very underground - restricted to expat compounds and private homes.

If you are flying EK - the cabin steward (if you ask discreetly) can be very, very helpful. 90% of the male ones are all gay.