It's the only group he has any intention of attending and, frankly, he's there just as much in the hope that he can help other people with the idea or widen some horizons than to work through his own issues, even though his own issues really could do some working through.
No surprises whatsoever at who's here already, and seeing Spike by himself and looking so serious, he heads over to him with a casual grin.
"Hey. Anything on your mind I can help with, or should I shove off and let you talk to people you aren't already shagging?"