Kim Cattrall's Sex and the City boy toy is switching teams.

Telegenically blessed thesp Jason Lewis is joining the cast of Brothers & Sisters as a love interest for Matthew Rhys' recently single Kevin. Lewis, who'll appear in at least four consecutive episodes beginning in early '07, plays Chad, a closeted soap actor (as if!) who "befriends" Kevin at an exercise boot camp.

In other gay-related casting news, sources say Men in Trees is wooing a fairly big name to play the same-gender-lovin' son of Buzz (John Amos) for a multi-episode arc. Hey, I think this calls for an asterisk quiz! Ready... set... solve: ***a*** ***e*.