So far there are three wolves; two beta's and one alpha. The "teen wolf", who is a beta is Scott McCall, played by Tyler Posey. The second beta is Derek Hale, played by Tyler Hoechlin. The alpha is Derek Hale's uncle.
They are not gay. The script from Teen Wolf is written for them to be straight guys and people are assuming they are gay because of the comedy of Stiles (aka Dylan) and how him and Derek (aka Tyler) have a love/hate friendship. In other words, in real life and on the show neither of them are gay.