The actor is Wesley Eure and he not only played Will for three seasons but he also sang that song too! He recently gave a lengthy and fascinating interview to fellow author Brent Hartinger on AfterElton with all sorts of details about his life in and out of the closet. He talks about being a teen idol, dating Richard Chamberlain (!) and mentions his current partner, the surname-less Richard who apparently played for the NY Yankees. A gay Yankee? I think we need to know more about this...