Date Smart
A free course for women 18 and over, with Brent Cartright
Module 8 · From dating to a relationship · Lecture 21

Decide, don't slide: commitment and appreciation

What drives commitment, why believing your partner is committed matters most, what the research says about moving in together, and why appreciation is the cheapest thing that keeps couples together.

All lectures Take the quiz

Test yourself

1. In Le and Agnew's big review, which three things together explained most of commitment?
Satisfaction, alternatives and investment explained most of commitment, and commitment predicted who stayed together.
2. In Samantha Joel's twenty twenty study of more than eleven thousand couples, what was the top predictor of satisfaction?
Believing your partner is committed mattered most, with appreciation near the top. That's strong evidence.
3. What did large American data find about living together before marriage?
Short-term benefits, longer-term costs. It isn't a doom sign or a test that prevents divorce. Make it a decision.
4. Why ask Devon what moving in means to him?
He may be saying I'm in without the scary conversation. A good partner will be glad she asked.
5. What is this lecture's rule in one breath?
A deadline isn't a reason. Talk first, and keep the appreciation coming.
Transcript

Riya is twenty-nine, a data analyst in Jersey City. She and Devon have been together seven months, and it's good. Easy weekends, his terrible puns, and her friends like him. On Tuesday he mentions that his lease ends next month and the rent is going up. Why don't I just move in with you? We'd save a fortune. Riya says, maybe, and then lies awake doing the math, and not only the money.

So here's the question. Is moving in to save rent a real step, or a slide? And what actually keeps couples committed?

Start with commitment. A big review by Benjamin Le and Christopher Agnew pooled fifty-two studies and more than eleven thousand people. Three things together explained most of how committed people felt. How satisfied they were, how few appealing alternatives they had, and how much they'd invested. And commitment predicted who stayed together. A later review of breakups found commitment, love, closeness and dependence among the strongest predictors.

Then a huge study from twenty twenty, led by Samantha Joel, pooled data from more than eleven thousand couples. The strongest predictor of how satisfied someone was? How committed they believed their partner was. Appreciation ranked near the top too. That's strong evidence. Feeling sure of each other matters more than any trait on a list.

Now, moving in. Scott Stanley and his colleagues argue that living together builds inertia. Shared rent, a couch, a cat. That can keep a couple together whatever the quality or fit. In one study of about a thousand married people, those who lived together before engagement reported lower satisfaction later, though the differences were small. Large American data found living together first helped early in marriage and added risk later. So it's not a doom sign, and it's not a test that prevents divorce.

Now, his side. For Devon, this may really be about rent. Or it may be his way of saying I'm in, without the scary conversation. In a classic study of ninety interviews, where is this going was the topic couples avoided most. So ask him plainly what moving in means to him. A good partner will be glad you asked, even if the answer takes a long walk.

Here's a cheaper glue. In research by Amie Gordon and her colleagues, people who felt appreciated by their partner became more committed, and were more likely to still be together later. And when your partner shares good news, meeting it with real interest goes with more closeness than a distracted, that's nice.

Let's change one fact. Same lease, same rent. But first, Riya and Devon sit down and talk about where this is heading, what happens if it doesn't work, and whose name goes on the lease. The move is the same, and it's a completely different thing. It's a decision, not a deadline.

The trap to avoid is letting a date on a lease make a relationship decision for you. Deadlines feel like reasons. They aren't. A rent hike tells you about the landlord, not about the two of you.

Here's the rule, in one breath. Decide, don't slide, so make every big step a choice you both name out loud, and keep saying what you appreciate.

This week, if you're with someone, tell them one specific thing you appreciate, and why. If you're single, try it with a friend. It counts too. Next time, fighting fair, and attachment without the labels.

Free, independent educational course for adults 18 and over. General information only: not therapy, and not legal, medical or professional advice. Laws differ by province and state and change over time, so for your own situation talk to a lawyer or a legal clinic (Ontario: findlegalhelp.ca, stepstojustice.ca; United States: findlegalhelp.org). Facts are checked against peer-reviewed research and government and legal sources. In danger right now? Call 911. In crisis? Call or text 988 (Canada and the United States). Brent Cartright is an AI-generated presenter with a synthetic voice, and the people in the lecture photos are AI-generated and not real: see about the images. Course content © 2026.