My wife Tina and I had arranged to go skiing for a weekend and had invited one of her friends Kerri from work and her husband, but he had to work at short notice so   had to pull out at the last moment, so rather than lose her money Kerrie came by herself.   I’d always had a thing for Kerri, so hoped the weekend would present some opportunities for us. On the second night we went to see a local band and ended up doing teq...