I know this because I caught a glimpse of it in his Virgin bag earlier. What's more, he's denied buying anything today in Virgin...TWICE, in fact.

Clearly, he's embarassed and he knows that I'll slag the fuck out of him if he tells me, as I've made my musical tastes quite clear to him.

Therefore, what is the appropriate action to take? Should I dismiss this horrible act, torture/question him further or 'have a chat' with him?