Fell Mettaton X Reader (?Smut/Lemon?)

O LOOKY, A ROBOT WITH A DICK!
You and Mettaton have been dating for about two years now. Within these two years, he without fail, has shown his love to you in many ways. He's protected you, once a month he brings you out on a date night, and every week he makes sure that at least once, you and him get to spend a night together at yours or his place. Though, even though he can be romantic, and loving, he's slightly damanding.(This is only for the first chapter. The rest will be stated in the other chapters.)
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(Y/N): Your Name
(F/N) Full name
(H/C) Hair Color
(E/C) Eye color
(H/L) Hair length
(S/C) Skin color.