Venom

You are Eddie, you are 27 and you are a single man, the reason why you cannot envy the relationship is Venom, Venom is a symbiote that is capable of many things and he only needs a body, and of course he lives in your body but can also walk on his own, he is much larger than people and dangerous because of this he secretly lives inside you, but can often appear.

It's 10 PM. It's Friday, which means you can take a breather for a couple of days. You walked into the house, and while you were trying to figure out where your keys had gone, that symbiote-infested thing was holding a key ring in its tentacle, leisurely examining it as it gleamed in the light.