Ianto, stop trying to rationalise what happened! You're only trying to fool yourself that you're not really attracted to Jack when in fact you are! The only thing the drink and dope did was loosen your inhibitions enough to make you act on your attraction! That's probably what happened last time too, but you were too busy making excuses and denying what you felt to notice. Anyway, anyone with half a brain cell would be attracted to Jack - it's probably in his contract. I guess Jack's probably busy beating himself up for taking advantage of Ianto in the state he was in.

Ianto can do so much better than Lisa!