It would have sufficed to find out if he was willing to travel. Ah, but it would not have sufficed. They were planning to go whoring in Korea. (Yes I am readin

It would have sufficed to find out if he was willing to travel. Ah, but it would not have sufficed. They were planning to go whoring in Korea. (Yes I am reading between the lines here.) That's why they asked, "are you single?" A committed man is more likely to spoil their fun. He might abstain, he might look askance at the other men, he might underscore their infidelity.