First off, don't call him to ask him what his problem is with you -- you shouldn't give a damn really, and your focus and topic of conversation needs to be on the child, not on his issues with you. His issue could be that he's still emotionally attache to you and doesn't know how to deal with it very well so he talks shlt about you. OR he could simply be bitter about the break-up.
And/or he might be dealing with shame because he has an ex and a child out there and wasn't man enough to be a good father, partner and provider. Pick one because one of these are his issue. And which one doesn't matter.
He screwed everything up, couldn't get along with you (you said you were 'off and on for 7 years'). Yes leave him in his own misery. Here is the deal about your ex and his friends.
His friends know how he is already. They know that he wasn't that great of a boyfriend and father (and couldn't have been because the relationship didn't work). And these friends of his would probably have to admit your ex is an ******* if they had to tell the truth or have their left arm cut off!
Along with this, i'm sure any number of people know you both. It doesn't matter what either of you say. Those people who know you well, already know how you are and what type of person each of you are.
So, if you are a good person, do the best you can, take good care of your daughter, it wouldn't matter what anyone outside your circle of friends, relatives say. Would it? NO.
Just take care of YOU and your child, and be a good example and mom.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.