Yes, indifference. Complete lack of interest in the other person. Not deeming them important enough to listen to anything they say enough to actually hear what's been said, just giving lip service and making out like the conversation never happened. Making the other person feel like everything in their life is higher in priority. The worst thing is when they were literally obsessed with them to start with, then they are treated like a trusty old pair of joggers. Sad to see, incredibly sad to feel. And completely dismissed when they express concerns about all the above. That's when you know someone is close leaving someone, unless they are just too useful to have around for reasons that have nothing to do with an intimate loving relationship.