The feedback of the asari's orgasm striking her like a nuclear explosion was the breaking point for the poor human, and he fell to the ground as soon as the guard allowed him to, barely aware that she was licking the excess cum off his member, or that she was even still in the room. As she walked out, he heard words that he wasn't fully able to comprehend at the moment, but which made him both excited and terrified for some reason. When she was gone, he groaned one last time and passed out from being totally overwhelmed, pants still down and everything.