Hilary Duff is Trolled by Husband Matthew Koma When They Spot Her Ex-Boyfriend - Watch!

Hilary Duff flashes a smile from underneath a massive visor as she hikes with a friend in LA

Hilary Duff Blushes as Husband Matthew Koma Tries to Flag Her Ex: Watch

Hilary Duff's Husband Teases Her About Possibly Spotting Her Ex at Dinner