If your wife and you are on good terms - discuss this issue with her prior to speaking to your son about it - you don't want conflicting message from your wife; if she brings it up with him later on. If you are not on friendly terms with her..then I would say read up on this issue...and leave your sexuality out of it....it's too much information for your kid to handle at this time - knowing that you just recently got divorced... not everything is about you....