Why Alia Bhatt defended Ranbir Kapoor's image as a gossiper?

Ranbir Kapoor has obviously been called a gossip machine by many Bollywood celebs many times. Recently Alia Bhatt, who is currently dating him defended her saying She said, "I've not heard Ranbir say one bad thing about anyone in my life and that's what I love about him the most. Even if he is criticizing someone, he (is careful about it)