It's me again. I'm looking for a fic where Xan has a crush on Spike, and Spike's oblivious. Spike says something to Xan about his weight, so Xan goes on a diet. Next it's about his fighting ability, so Xan takes karate (or something like that) lessons. Is running himself ragged, and when Spike finally notices, Xander loses it and blames Spike.