Will you dance?

After a minute or two Harry had scribbled a name, number and even an apartment number because he was feeling a little ballsey. Just in time too, as he was so engrossed in his master plan, he didn't even realise Louis had turned into the cul-de-Sac to the universities first year accommodation block.

Or

A university AU where Harry drunkenly leaves his number in the car of a random man who gave him and his friend Niall a lift home from the club.