I've been married for 43 years and the secret isn't communication or date nights — it's the ability to be furious with someone at 8pm and still make their tea at 9pm because love after 40 years isn't a feeling, it's a decision you make 6 times a day and some days 3 of those decisions are made through gritted teeth

Last week, I watched my neighbor's twenty-something daughter storm out of her parents' house, slamming the door so hard the welcome wreath fell off. Ten minutes later, she was back, sheepishly picking it up and going inside to apologize.

"Real love is messy," her mother said to me later, and I thought about how we spend so much time trying to make love look pretty when its greatest strength might actually be its ability to survive ugly.

When young couples ask me for marriage advice, they expect me to talk about communication techniques or the importance of keeping romance alive. They lean in, ready to take notes about date nights and love languages.

Instead, I tell them about the night I was so angry at my husband that I fantasized about putting salt in his coffee instead of sugar. Then I made him his favorite chamomile tea anyway, exactly how he liked it, because his acid reflux was acting up and I knew he'd need it to sleep.

Love is a verb you conjugate through clenched jaws

Have you ever noticed how marriage advice always sounds like it was written by people who've never actually been married for more than a decade? "Never go to bed angry," they say. Please.

After 43 years, I've gone to bed angry, woken up angry, had breakfast angry, and somehow still remembered to pick up his prescription on my lunch break. Because that's what love looks like after four decades - it's not the absence of anger, it's the presence of choice despite it.

I remember one evening when my husband had forgotten, yet again, to call the insurance company about a claim he'd promised to handle for three weeks. I was furious. Not the dramatic, plate-throwing kind of fury you see in movies, but the slow-burning kind that makes you consider separate bedrooms.

As I stood in the kitchen, gripping the counter, I had two choices: I could let this resentment calcify into another layer of bitterness, or I could make him the grilled cheese sandwich I knew he was hoping for.

I made the sandwich. Not because I'd forgiven him or because I wasn't still mad. I made it because after 40-plus years, I understand that love isn't sustained by feelings. It's sustained by decisions - small, unglamorous, sometimes grudging decisions to act with care even when you don't feel caring.

The myth of soul mates and other fairy tales we need to stop believing

When I met my second husband at that school fundraiser, accidentally outbidding him on a weekend getaway I couldn't really afford, I thought I understood what mature love was. After all, I'd been through marriage, divorce, single parenthood. I was practical, levelheaded. I knew better than to believe in soul mates.

Thank goodness for that, because if I'd been waiting for someone who never irritated me, who always understood me perfectly, who made every day feel like a romantic comedy, I'd still be waiting.

Instead, I found someone who left cabinet doors open, who could never remember which day was recycling day, and who had an annoying habit of starting stories in the middle. I also found someone who showed up, day after day, year after year, through the mundane and the difficult.

During those seven years of his Parkinson's disease, there were moments when I wanted to scream at the unfairness of it all. There were times when I was angry at him for being sick, angry at myself for being angry, angry at the world for continuing to spin while our life felt like it was stopping.

But every morning, I still made his coffee with the exact amount of milk he preferred, helped him with his buttons when his hands wouldn't cooperate, and sat beside him on the couch even when we had nothing left to say.

The arithmetic of lasting love

Here's what nobody tells you: long-term love is mostly math.

It's calculating whether this particular battle is worth the energy it will cost. It's the running tally of small kindnesses that outweigh the irritations. It's understanding that if you make six decisions a day about how to treat your partner, and even just four of them are made with love, you're still winning.

Sometimes those loving decisions are easy - bringing them coffee in bed, laughing at their terrible jokes, reaching for their hand during a walk. But sometimes, those decisions feel like lifting weights with a pulled muscle.

Sometimes love is not saying the sharp thing that's sitting right on the tip of your tongue. Sometimes it's saying "I'll handle dinner" when you're exhausted because you can see they're even more exhausted. Sometimes it's choosing to see their forgetfulness as distraction rather than disrespect.

My Thursday morning coffee tradition with my neighbor has taught me something about this. For 15 years, we've shown up, whether we feel like it or not.

Some mornings we laugh until we cry. Some mornings we sit in comfortable silence. Some mornings one of us is cranky and the other one carries the conversation. But we show up, because that's what commitment looks like - it's not about feeling like doing something, it's about doing it anyway.

Final thoughts

Real love, the kind that lasts decades, isn't Instagram-worthy.

It's not the couple who never fights or the pair who still look at each other like teenagers after 50 years. It's the couple who fight and choose to stay anyway. It's looking at someone who's driven you to the edge of patience and deciding, for the thousandth time, to step back from that edge.

The secret to lasting marriage isn't finding the right person or mastering the art of communication or scheduling regular date nights, though all those things can help. The secret is simpler and harder than that.

It's the daily decision to act with love even when you don't feel it, to be kind even through irritation, to show up even when you'd rather not. It's understanding that "for better or worse" means exactly that, and that most days contain a little of both, sometimes in the same hour. That's not failure. That's marriage.