Amid a scene of scantily clad sun worshipers, the best friends Reza Farahan and Mike Shouhed gaze at different objects of desire: Mr. Farahan at musclebound guys, Mr. Shouhed at voluptuous women. Their distinct lusts, which may have alienated gay and straight men from each other in the past, inspire the ultimate gesture of fraternal connection: a fist bump. Farahan said. The bond strikes the Irish author Jarlath Gregory as fresh for the culture and familiar to him. Gregory, 38, who is gay.