I would do a few things:
1. Tell him "I'm not gay, sorry".
2. If he follows me "If following me on purpose, I'm obligated to tell you of these weapons I have with me and am experienced with:
- A .22 boot revolver
- A throwing knife in my sleeve compartment
- A .38 special attatched to apparatus in my sleeve
- Two halves of a metal bo stave in my coat
- A hypodermic needle with a solution of hydrogen peroxide and urushiol
3. Watch him walk away
When I get older ( 21 ) I would pack this much heat, in addition to a glock in open view.