The American Psychological Association defines sexual orientation as an "enduring emotional, romantic, sexual, or affectional" attraction toward another person.
If you think your son's sexuality can be determined through any means other than actually…
"Is My Son Gay?" Is One Aggressively Sad Android App
There's a new Android app out (here's the English version) called "Is My Son Gay?" in which one can answer an easy series of questions ("Are you divorced?") that will tell you if, in fact, your son is a gay person.