I've only just read this but big hugs to you firstly. Your XP and mine sound very alike we were always competing against mates and mates always won. Now DD hasn't seen him for 2 years (we broke up 4 years ago) and hes now saying thats ok as he has 2 other daughters now and doesnt need our DD. It is def hard to hear things like that as im sure you are learning with these phone convos.
Im glad his parents are supporting you they must feel very dissappointed in him. Stay strong if not for you for your children, it is very hard seperating but i think when you've felt like a single parent for some time its much easier, from my experience anyway!
Good luck with your future hun, it may seem like the end of the world atm as this is the man you planned on spending the rest of your life with but one day your prince charming will sweep you off your feet