Don't Cry Baby 

Satoru, a Medical Representative at a Pharmaceutical Company, seems to be prone to falling into barren love. Only days after he's broken up with his lover, Satoru meets Toudou, a veterinarian, through work. He ends up confessing that he's gay, but Toudou's bland reaction hurts his pride. Then one night, Satoru is injured by a one night stand, and ends up calling Toudou... This is love therapy for grown ups.