9 Ways to Sniff Out Whether Your Ex Has a New Girlfriend

2. Scrutinize his social media posts to deduce how he spends his days off


“He spends his weekends holed up at home, so I’m sure he’s still single!” Facebook stalking is one way to guess at his dating status. If he’s always making lonely posts like, “Another Saturday night alone with Netflix!” it’s a safe bet he’s still single.