I have read what Religious Tolerance has posted on their site before. They base what they have to say upon opinions of those who support gay activists and it is not a balanced or even truthful view.
The American Psychiatric Association removed homosexuality from the DSM III in 1973 without any studies to support their decision. If you want to know the truth about this decision read "Homosexuality and the Politics of Truth by Jeffery Satinover. After the APA's executive committee made this decision a poll of the membership indicated that 60% of those who responded disagreed with the decision. So when Religious Tolerance appeals to the APA and two sources that support the APA they are being selective in what they share on their site.
Both APA's and the AMA refuse to do peer-reviewed studies on the roots of homosexuality and the proper way to counsel those seeking help to overcome homosexuality. Can all gays change? No. Do we know why? No.
Do some gay teens commit suicide? Yes, but so do some heterosexual teens.
I can understand your concerns for your son, but I cannot understand why you accept an opinion from an Internet site that does not present both sides of an issue.