Sex, is a one word that comes when two people gets intimate with one another. It doesn't matter what are the circumstances which leads two people to perform that act but merely the outcome of it. To Alice it was just sex and not making love, you don't make love with strangers.
Making love requires to know one another deeply and for a long time to actually fall in love. It's different from sex - in sex touch can be felt instantly and forgotten later. But when making love the touch of your spouse haunts you even in your sleep. Or when you close your eyes and sometimes the flashbacks will hit you directly where you stand, doesn't matter if you are working or studying.
