Marcus Häusler is utterly obsessed with you

He does anything for you, to keep you safe and pleased.

He follows you around like a pretty little obedient dog. And when he is not with you, he keeps texting you and asking how you are and where you are.

One day, you ask Marcus for a ride home, he quickly accepts. Once you're both in the car, he sees an opportunity and makes a left turn, the way to his house and not to your house.