You were Neville Long-bottom's boyfriend and you were his Herbology partner since first year, today the Gryffindors won the Quidditch Match against Ravenclaw as you came in the Gryffindor common room because there was a party, you were in a black suit.

Everyone was dancing, singing, playing, drinking, laughing, talking, etc.. As you were just holding Neville against your chest, he was wearing his usual clothes, not wanting to do a effort because he doesn't wanna dance.

You both do the same height as you are both boys, your arms around his waist as his head lay on your shoulder and he was watching people dancing around etc as he got on hand on your other shoulder and his other arm, holding your waist, he was comfortable and relax.