say one thing and mean another

sincerity. it's not that easy to find it in the people around you now. this person can say one thing, and mean another. he/she can tell you something today, and tell you something else another day. this person is not really interested in your life, talking to you is just something that happened conveniently. otherwise, dont even bother to find out about your life. he/she isn't that all a sincere friend.