Blacked out and cheating?

My boyfriend and I were talking about drinking and I asked him if he would ever cheat on me if he blacked out. He said he is a responsible drinker, aware of his surroundings and that he wouldn't put himself in a position to blackout. He then said he wouldn't put himself in a position to where he can cheat on me or possibly cheat on me. When I asked him to clarify, he said that anyone could be put in these kinds of situations and manipated, even me. My question is, does that seem plausible that he wouldn't cheat on me? Do you think blacking out would automatically mean someone will cheat?

Blacked out and cheating?
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