Maze (2000)
Maze is a 2000 romance film about a New York painter and sculptor—Lyle Maze (Rob Morrow)—with Tourette syndrome (TS) and obsessive–compulsive disorder (OCD), who falls in love with Callie (Laura Linney), the pregnant girlfriend of Maze’s best friend Mike (Craig Sheffer) while Mike is away on a long stay in Africa as a doctor.
More at Wikipedia.