Four pointers a woman is a drama queen

A friend was recently locked in his bathroom by his three-week-old girlfriend after she found some saucy message in his phone. A message harmlessly sent from a former college mate. Nothing else, besides the clichéd 'sweetheart' salutation was offensive or telling. Given the bathroom is at the abandoned corner of the apartment, he could not call anyone for help. After spending two hours without help, he broke the door in one moment of madness and wanted to slap the woman thunderously and manually whack some sense into her, but she had packed and left.