Gay Parenting Support Group
Gay parenting has been an important issue over the past few years. Over 34% of lesbian mothers have at least one child residing in their home and 22% of gay men have at least one child living with them. Together there are 6 to 10 million gay parents that are caring for between 6 and 14 million children.

Next, "being gay myself" I believe there is no tell-tale sign that someone is gay. I consider myself pretty straight-acting so a lot of people were surprised when I came out. The point is though; you cant really tell if someone is gay without them telling your or you finding hardcore proof; however, a mother's intuition can be very accurate.
Unfortunately the best way to find out if your son is gay is to let him tell you himself. Don't pressure him into telling you. You have to let him come out on his own. Just let him know that you will love him always and no matter what.