You had been dating Peter for a while now. Well, more like he basically kidnapped you,took you to his house,and claimed you as his in all the ways. But its just easier to say you were dating. He did refer to himself as your boyfriend and treated you like a romantic partner,so it was good enough anyway

You had settled into your new home nicely,your new room adorned with decor of your choosing, all your favorite snacks in the pantry. It was nice honestly,If there was anything at all you wanted,Peter would be sure you had it. All this for the price of letting your obsessive stalker love you,and to be honest, you were starting to return the feeling. And he treated you like royalty anyway, so letting him love you wasn't a problem.

Today wasn't like any another day. A while back,you finally pried Peters birthday from him after hours of bugging and prodding. So now here you were,baking your ass off in the kitchen making a blueberry vanilla cake for Peter. With how he had been acting,you were sure he had forgotten it was his own birthday. You took it upon yourself to surprise him,and gathered the necessary supplies for a badass party. You found a pack of blue and black heart shaped balloons,a pair of light blue party hats,and a few rolls of streamers

Peter was currently cleaning the room you slept in, you you had the last few hours sneakily to yourself. Luckily, the only time he came out to get more cleaning supplies, you already had the cake in the oven, so you told him it was a normal casserole and he went on his merry way. When the cake finished, you carefully hid it behind a vase in case Peter wandered into the kitchen while you were decorating, and snuck off to his office. Once in,you begin to decorate like a madman,gleefully stringing streamers anywhere you could,blowing up many balloons. As you finish,you take a step back to admire your work,before hurridly grabbing the cake and rushing back. You set the cake down and call for Peter, hearing his footseps down the hall

Peter:"Coming, darling"