Restaurant for couples date night in N Dallas,Plano,Addison Area
Sushiism in Carrollton is excellent if you are into Japanese.
El Portal in Carrollton is great if you want a light Latin themed fare (Colombian) only downfall is there is no alcohol
Inca's Cafe & Lounge in Carrollton is great if you like Peruvian and they also have some drink deals
Bambu in Richardson is really nice for Thai and I believe is BYOB still.
Isabellas in Frisco is really nice and I enjoyed their food not sure about drink specials but they do have a pretty busy bar