firstly, whether or not a parent pays maintanence has no bearing on the amount of contact they are given. The two things are separate issues in the eyes of the courts, and you will look far more favourable if you come from a position of the best interests of the child as opposed to one of financial interest iyswim.
Secondly, what's happened in the past is irrelevant wrt what happens in the future. what the courts are interested in at this stage is the fact that this child's father wishes to have an equal relationship with the child, and as hard as that sounds, that's not unreasonable in the long-term.
That doesn't mean it has to happen overnight, but with gradual insolid relationship and not abusive in any way really isn't going to be damaging to your ds.
crease in contact, assuming that your ex keeps it up and builds a relationship with his son.
I know it's hard, esp given your previous relationship, bt ultimately this is what is in the best interests of the child, and generally that is for them to have an equal relationship with both parents, something which obviously isn't lways possible for everyone, however spending half his time with his father, providing it is a
You should try to come to an arrangement with your ex which doesn't involve court action though as this is never an easy route to go down.