Angel owns the Bronze, lets Willow destroy it.

[ladyhatshepsut.livejournal.com]

Another old one I'm trying to find.  I don't remember exactly what it was but Buffy (and the rest of them?) did something to betray Willow or make her feel totally on the outside.  She runs into Angel who tries to console her.  Turns out that he is the owner of the Bronze and he gives Willow a baseball bat and encourages her to take her anger out on the glassware, tables and chairs, and the pool tables, which causes the club to be closed down when the gang goes there later.  There's also something about someone (most likely Angel) traveling over the rooftops, watching or following the Scoobies.

This may be the one where Angel turns a willing Willow to be his mate to take revenge for how her "friends" treated her.  If that's a different story, I want that one too, please.