Indulge in a luxurious Valentine's Day dinner with this classic lobster thermidor recipe. Start by cooking the lobster tails until they are tender and juicy. Remove the meat from the shells and mix it with a creamy sauce made from butter, flour, white wine, and Gruyere cheese. Spoon the mixture back into the lobster shells and broil until golden and bubbly. Serve this elegant dish with a side of buttery mashed potatoes and steamed asparagus for a truly decadent Valentine's Day feast.