My goodness me! What surprising responses from some people.
Firstly, nowhere has fifisboys said how, when or why her DP's previous relationship broke down, so it really is not for anyone else to decide that it is too soon, etc., for him to be in a relationship with fifisboys now. That is just ridiculous.
Secondly, there are many double standards at play here. When a father is being a twunt, refusing to see his DC, etc., everyone says 'what an irresponsible twunt'. He needs to understand his prioties. How can he not think of his children, involve them in his life, etc., etc., We have all seen lots of threads about this. BUT...it sounds to me that fifisboys' DP is trying to do his best.
It is a very difficult situation and God forbid, should DH and I split up I would hate, loathe, detest DD to go off to him every other weekend, especially if he had a new partner. However, I would have to allow that to happen, to ensure DH was still part of her father's life. It would be very important.
You just cannot have it both ways - expect the father to maintain contact, to continue to be part of his DD's life, but then be soooo prescriptive about his new partner.
fifisboys, I'm afraid I cannot think of any good advice as to how you go about this, other than a gentle-gentle approach. Good luck.