This is more about interest. Two opposite sex unattached adults hanging out alone with each other will probably progress to dating if it goes on long enough unl

This is more about interest. Two opposite sex unattached adults hanging out alone with each other will probably progress to dating if it goes on long enough unless there is something explicitly wrong with a sexual relationship (aka one person doesn't have a normal sexual drive/whatever). AKA, there may be sexual interest simply due to the lack of immediate alternatives but neither party knows how to express it outright, so the flirting and hanging out together becomes more overt until its clear to both parties. (PS: This is sorta why you don't see a lot of married opposite sex people "hanging out" alone in private. There is an understanding that your putting both people in a position of temptation, or if nothing else the situation definitely fires up the rumor mill because frankly there is a high incidence of cheating, and this is one of the clearer ways this happens. ).