I liked Latin Quarters, amazing food, great drinks, and when I went with my sisters, we sat outside--nice weather, no kids at that time, candles on the tables.....there was a live guitarist playing soft music, and some couples were "dancing" (the stand up and sway kinda dance, not a formal dance). So that could be romantic if that's what you're looking for.
If you're looking for a more "wild" time, Red Coconut has great drinks and a dance floor, and the groove has a few dancefloors I believe. Both places are bars/clubs.
If you're looking for laid back, pat o'briens seems like a good place, though I wasn't impressed by their food.
Have fun!