My ex-wife and I don't see eye to eye on a lot of things. But one thing we've kept relatively clear over the last 5 years of divorce is THE KIDS COME FIRST. Always.
There are plenty of single parents who use their kids to get out of almost every obligation. Even obligations to themselves, for say... exercise, dating, taking responsibility for their own actions. And I have been the dad who apologized for checking his phone when a text dinged while on a date.
I'm a bit closer to my ex-wife now, having seen a glimpse into her life. I know we're both doing the best we can. And Boyhood celebrates that triumph both alone and together.