Pat the scallops very dry with paper towels and remove the small side muscle if attached.
Season the scallops with salt and pepper. Lightly season the lobster.
Heat a heavy skillet over medium-high heat for 2–3 minutes. Add olive oil.
Sear the scallops for 2–3 minutes without moving them.
Flip the scallops and cook for another 1–2 minutes until mostly opaque and slightly springy.
Lower the heat to medium-low. Melt 2 tbsp butter, add garlic, then warm the lobster for 2–3 minutes.
Add the remaining 2 tbsp butter and lemon juice to the skillet. Stir gently until glossy.
Plate the scallops and lobster, spoon over the butter sauce, and garnish with parsley.