Well, it looks lively enough for a dating site. I think it may be a bit too loud. It also can be mistaken for a logo for a gay dating site as the rainbow colors may, I believe ,signify that. Also, drop shadows are something that are not used in logos. You have a giant circle that depicts friendliness and a corner edge that signals neutrality.
I would say it is a good start but: Loose the background, maybe tilt or skew the fonts a bit maybe giving a hint of motion, loose the drop shadow