>>11460315Will probably fail unless he remembers doing it. If he remembers having sex with someone, he could try masking himself as that person so it might succeed. If the genitalia doesn't match with the memory, he's in a real hurry to get a sex reassignment surgery.
Alternatively he could try to sneakily make himself (the one who hasn't time traveled yet) take some anterograde amnesia inducing drug. Or maybe just something that'll make him unconscious.