Jesse McCartney: Holding Hands with Mystery Girl

Jesse McCartney is all smiles while out walking with a mystery gal on Tuesday afternoon (January 22) in Beverly Hills, Calif.

After a doctor’s appointment, the 25-year-old actor joined his mystery gal and her pup at the gym.

Jesse will guest starring on an upcoming episode of Fox’s new comedy Ben and Kate, in February!

According to EOnline, in the episode, Kate (Dakota Johnson) returns to college and shares a class with BJ (Lucy Punch), who tries to get her to let loose and have fun, but Kate is determined to focus on her studies this time around. But that might be a little bit difficult with Jesse (McCartney), a hot fellow student, trying to get her attention and eventually asking her out.

10+ pics inside…