Definitely about a divorce. The lines that confuse most people, the bit about "that woman's on my back again," sound like she's forcing a divorce. It's obvious that the father cheated and he's trying to explain it to his son, but I think the father sincerely regrets what he did. He understands, though, why his wife's upset, but he still loves her and wishes he could fix it. He hopes his son will understand someday what happened, and not hate his father for his mistake.
Definitely about a divorce. The lines that confuse most people, the bit about "that woman's on my back again," sound like she's forcing a divorce. It's obvious that the father cheated and he's trying to explain it to his son, but I think the father sincerely regrets what he did. He understands, though, why his wife's upset, but he still loves her and wishes he could fix it. He hopes his son will understand someday what happened, and not hate his father for his mistake.