@ImAvingOops
I'm not keen on it. He should be taking his own kids to the park and I don't like the implication that it's his boring wife making him do it, as if it's her fault alone that they had a family!
There's a lot of blaming of the wife, when he sounds a bit wet.
I think that's the point.
Heaton's lyrics are often quite obscure and this one is a man writing from a woman's perspective. Giving her the young free and single life that most songs assign to men, watching a man she might love prepare to marry a woman she fears he does love.
She's suggesting that all the things we associate with being married are a boring, time wasting pursuit and that he and his soon to be wife will age and become tedious.
But the kicker is that all she has to offer is a fuck.
I like it, and much of his writing, because the meaning of a song can change if you focus on different lyrics.
But this one, and many if his others like 36d, aren't quite what they seem. Not that they aren't nasty, they often are, like Mother's Pride. But that's the point, setting tired old sexual tropes in a slightly different way, to make them more vicious, uncomfortable, noticeable.
And all wrapped up in a jaunty tune!