I could be completely off but I remember reading Patrick expressing distress that he and his children weren't on good speaking terms in a recent book. Except I clearly also remember reading about him and his son celebrating together the then imminent arrival of the film X-Men: Days of Future Past back at a convention or something (circa 2013 or 2014). And this also around the same time Patrick married his current wife.

So Patrick and his son seemingly were on good terms at least to be celebrating an X-Men movie together at conventions and then they aren't on speaking terms years later. AND Patrick marries his latest wife around the same time he and his son were seemingly happy together in public. One wonders if there isn't a connection (like his children don't like his current wife or something)....