TMZ has learned that police are conducting a criminal investigation into allegations that R & B singer Tyrese punched his pregnant girlfriend twice in the stomach early this morning.

Police sources tell us that Tyrese’s live-in girlfriend claimed that the two got into a heated argument around 5:30 AM at their Los Angeles home. According to our sources, paramedics responded after Tyrese allegedly struck the woman, who is five months pregnant, twice in the stomach and then drove away from the scene.

Why do guys hit girls! Just someone tell me why? Hes an asshole. This is an asshole post! If its true.