Heya, sounds like somebody is either jealous, possessive, or just that type of judgmental negative not nice at the moment person who needs instant gratification.
I have no idea what the context of the statement was, but if it's just to get a reaction, just ignore, and although it goes against many gut instinct desires to tell this not nice person their business,
ignoring them puts their ego where it should be....questioning if they should be trying to tear you down instead of lift you up. Nobody deserves you if they do that.