So I dated my ex for a very significant amount of time and we were engaged. My ex is FTM and I went through that entire process with him and he went through me losing my sister very unexpectedly. Our relationship ended because we just made better friends than romantic partners. We are like family and have been thru a lot together. I still hang out with his family and vice versa and we have many mutual friends. We also share joint custody of our dogs and hang out quite often. There is no chance of our ever getting back together or having any romantic anything. I have met someone new who is very threatened by this relationship and wants me to cut him out of my life because they are afraid we will get back together. While I understand how threatening it could seem this guy is not someone I really see as an expartner anymore but my best friend and family. We have been split up for well over a year so there has been significant amount of time. I guess my question is how can I try to make this new romantic interest understand where I am coming from?