More information on Bisexuality
Male Bisexuality: Current Research Findings | Psychology Today
Understanding Bisexuality (apa.org)
Chapter 3: The Coming Out Experience | Pew Research Center
Journal of Bisexuality: Vol 21, No 2 (tandfonline.com)
Bi Men Network Links and Resources For Bisexual Men
Lesbian, Gay, Bisexual and Transgender Health (apa.org)
Adult websites for finding other bisexuals
While it is certainly possible to encounter bisexual men on gay websites, the ones listed below have been found to be best for finding bisexuals.
Adultfriendfinder.com
Silverdaddies.com
Squirt.org