Happy Birthday, Harry! (& Neville)

A ficlet for Harry and Neville's birthday (a day late.) AU- Severus chats up a talented musician in a pub and kisses him. The next day is Severus's first day teaching potions at Hogwarts, where he discovers that same musician is a seventh year Gryffindor. Severus tries to deny his longing, but fails as Harry continues to pursue him. Lost of swearing.