Giles is a professor married to a much younger buffy when she bumps into spike...

...while lining up for coffee. Spuffy have an affair and tryst at a quirky inn which kinda becomes their special place. I remember a scene where they have a quickie at spike's office (I think they work at the same place too), followed by an awkward elevator ride where buffy can barely introduce spike to giles, who has come to pick her up . Somewhere at the end it is revealed that Giles, too has had an affair.
I read it here at TSR but can't remember title or author.
Thanks in advance.

I *think* I remember. It is one of tahmoe's.

Could it be A Glimpse Into An Affair by tahmoe?

She is married to Giles here.
The summary says only: Elizabeth and William are two strangers who walk into a coffee house but walk out as something different.

The story works well without using direct speech / dialog. It's marked as finished (even I never saw the epilogue posted).

This is it! You are made of awesome, cordykitten!...I've been turning this over in my head for awhile. Two Thumbs up for Find-A-Fic...