I think the best science today answers your question with a resounding “no.” If your son is indeed homosexually oriented, that is not anyone’s decision—not even his. Most experts in this field deny that any therapy can change a person’s true sexual orientation.
The U.S. bishops’ Committee on Marriage and Family has written Always Our Children: A Pastoral Message to Parents of Homosexual Children and Suggestions for Pastoral Ministers (Publication 5-131 in English and 5-130 in Spanish). Your local parish may have a copy. It is available from the U.S. Catholic Conference for $1.25, plus 10 percent shipping and handling ($3 minimum). Call toll-free 800-235-8722 or visit www.nccbuscc.org.
Our Catholic Update titled “What the Church Teaches About Homosexuality,” by Richard Sparks, C.S.P., (C0799) can also be ordered either online or by calling 1-800-488-0488.