What’s wrong with the man?

W:How about your exam?
M: I failed again.
W:Why? Did you oversleep again?
M: No, I didn’t.
W:Then, what’s wrong with you?
M: Oh, I can’t tell you.
W:Tell me. Maybe I can help you.
M:Nobody can help me.
W:Don’t say things like that. Tell me your trouble. We are good Mends,aren’t we?
M:Yes. It’s something like this. This time,I made full preparations, but Smith told me he could get perfect marks. I decided to copy his paper and I did copy, though not completely. It turns out that his marks were lower than mine. And we both failed.
W:lt serves you right.