You guys are going to have to stop with the DJs. This is turning into a very bad edition of he says/she says.

You both should try to get a good night sleep, and bring this up the next day at an agreed upon time. And you should drop this accusation of infidelity thing. Either prove it by hiring a PI or wiretapping her or checking her computer or drop it entirely. You will have much more success if you meet her needs and she meets yours.

[start mini-rant]
This comment is to the world in general, if your wife is sleep-deprived or not a morning person, do NOT wake her up in the middle of the night looking for something that requires energy or thought (just because you are up at the time).
[end of rant]