The Other Side of the Bed (2002)

When Paula leaves her mate Pedro, he misses her and looks for comfort with his best friends, Javier and Sonia. Paula is having an affair with Javier. The cuckold Pedro tries to find who is the secret lover of Paula, and hires a private eye. Meanwhile, while comforting Pedro, Sonia has one night stand with him and Javier thinks she is cheating him with her lesbian friend Lucia.