What does tsui mean in this context?

Question

A:「 ほんとう カンニング したん ですか。」

B:「 つい。」

What does つい mean in this context?
I thought つい is used to indicate unintentionally?

Answer 1

「つい」in that context means something like "Yes, in spite of myself."

"Did you really cheat on the test?"

"Yes, in spite of myself."