Humming, you rang the bell to your teacher's house. You'd been having trouble with Maths for a while now and only recently had you found a teacher to help you. Although he was cocky, he really did explain things thoroughly to you and it showed in your results.
Gilbert was an older brother of one of the guys in your class. Ludwig was a bit odd around you, he always acted strangely but you didn't let it get to you.
The door opened, snapping you out of your day-dreaming. You walked in without a moment's hesitation, smiling at Ludwig as he held the door for you.
Awkwardly he followed as you went in to the dining room which was where your lessons took place. His eyes roamed over your back to your behind, he couldn't help himself. He was a teenage boy afterall and he knew his behaviour must be different around you, but he couldn't help lusting after you.
He had had the most major crush on you ever since you'd admitted that you needed a Maths teacher and of course he immediately recommended his brother; he'd see you more that way.
"Berlitz!" You cried, stooping down to stroke the dog happily. Ludwig cleared his throat, leaning against the doorframe. "Bruder won't be home for a while yet, so do you-"
"Aah, should I come back then?" You asked, interrupting him and straitening up. "Nein, that's not necessary, but-"
"Aaah!" You squealed, breaking him off mid-sentence again. Berlitz had jumped up on you and was attacking the various bracelets on your wrist.
"Down." Ludwig commanded, motioning for you to sit down and make yourself comfortable. "Do you want anything?" He asked, his back turned on you and the dog. "No that's okay." You bit your lip as the dog started nuzzling his nose in between your legs.
"Down!" You said, trying to copy Ludwig's tonality. He turned to see the dog shoving his face in your groin, making you blush in embarrassment.
He growled, feeling stupid. He couldn't believe he was feeling jealousy towards an animal but when Berlitz didn't let up he grabbed it by it's collar and stared the dog in the eye.
"Nein. She's mine, understand?" The dog whimpered and cowered away from his piercing gaze. Ludwig towered over you, trapping you in your seat. "No one apart from me is allowed to do that." he murmured, his cheeks pink.
He nipped your lips, claiming you. "From now on you're mine."
The Beilschmidt family was composed out of two members, Gilbert, your Maths teacher and Ludwig, your boyfriend.