My ex and I went to see a show together recently. We do that. We date, we see each other, and then we each go to our respective homes. We had a great time, too.

While we were at the show, we met a friend of ours — and he had a new girlfriend with him. She couldn't have been more than 20, and he was in his late 30s. More power to him, I say.

The next day, though, my ex and I were discussing how young the girl was and how we felt about people who date younger people. I expressed a little bit of surprise at the difference in ages between our friend and his girlfriend. My ex pointed out there was 10 years' difference between us. Nothing wrong with that.

Then he said, "The problem isn't that people date younger people. The problem is that no one seems to be able to keep a girlfriend. Why is that?"

He was right. Men in our area who divorce do try to find new relationships. None of them stick. They find a woman and a few months later, they're with someone new. They can't seem to find a stable relationship that lasts.

"I admire us, you know," he went on thoughtfully. He said that despite our history, our breakup, and the fact that we don't live together any more, we're mature enough to work at keeping our relationship alive because we love each other.

We talk. We find ways around our differences. We're learning what works and what doesn't. We're each trying to find a way to be a couple, no matter how hard it is sometimes.

Being a couple is work. A relationship isn't a discardable commodity when people have differences. They find solutions if they want to be together. They work out their issues. They talk. They resolve the problems.

There's nothing wrong with playing the field, either. But to me, that just shows someone isn't serious about commitment or hasn't figured out what's important to them.

Then again, maybe not being committed is what's important. Nothing wrong with that, either. It's just not right for me.