Her

The science of things never interested Richard. Why do people do what they do? He didn't care.

For example, why was his best friend grinding on a total stranger right now?

He didn't care.

He rarely cared about anything these days anyways.

Not his classes, not his grades, nothing.

Okay maybe he did care about his car. Just the car. And just a little bit.

He watched his friend whisper in her ear as they danced.

The girl seemed to like it. He could see her smiles from here.

Soon his hand was her waist and he was pulling her aside. Probably to make out by the dark corner behind the bar.