Emily in Paris

Ashley Park and Paul Forman have called it quits ... TMZ has learned.

Sources with direct knowledge tell TMZ ... the "Emily in Paris" stars' relationship ended in the last month or so. It's unclear what caused the split, or who ultimately pulled the plug -- but what's certain is they're no longer together romantically.

Ashley fueled breakup buzz this past weekend when she popped up at Selena Gomez's wedding in Montecito, CA -- rolling deep with her girlfriends, Cara Delevingne, Nina Dobrev, and makeup artist Jenna Nicole -- but noticeably without Paul by her side.