Green flags

A green flag in dating is a behavior that shows, over time, that someone is safe and good to be with. It is not a grand gesture. A green flag repeats, holds up when you disagree, and looks the same when nobody is watching.

Updated October 4, 2026

Means

Early signs someone is good to be with

First seen

Relationship sense from the 2010s (a July 2013 Reddit post is the earliest found by Roger Kreuz)

Related terms

Red flags, Love bombing, The ick, Beige flags, Situationship

In Swedish

Green flags

The lists of green flags we read are mostly lists of good manners. Manners are pleasant, but mostly they show how someone behaves for one evening while trying to impress you.

Signs you are looking at a green flag

Kind things happen on dates. A green flag is something that also passes a few plain tests.

• It has happened more than once. One thoughtful text is a nice moment. The same text every time they run late is a habit.
• It held up when you disagreed. Patience is easy while you agree on everything. Look at how much of it is left after you said no to something they wanted.
• It cost them something. Time, a detour, a plan they moved for you. Compliments are free, which is partly why they are handed out so freely.
• It is not reserved for you. They are the same with the waiter, their sister and the friend who is always late. Charm aimed at one person at a time is closer to a sales pitch.
• You did not have to ask for it. If you had to request the call, the call still counts. It just tells you less.

Two or three of these in the same person, over a few weeks, is more than one nice evening gives you. The reverse does not hold: a sudden turn-off over a mannerism is the ick, not a missing green flag.

Green flags that look boring (and red flags that look green)

The reliable green flags are rarely the ones people post about. They are small, and they are easy to miss because nothing goes wrong.

• They reply when they said they would.
• They tell you when plans change, before the plan rather than after it.
• They are fine with you seeing your friends without them.
• They apologize in one sentence, without a speech about how bad they feel.
• They are the same person to the waiter as they are to you.

Nobody calls a friend to report that he texted at the time he said. Reliability has no highlight reel, which is exactly why it gets overlooked.

Some things look green and are not, or not on their own.

Intense attention in week one. Daily messages, big compliments, plans for next summer. It feels like the strongest green flag there is. It is also what love bombing looks like, because love bombing copies every visible sign of affection. The test is whether it survives a no. Decline one plan. Real interest adjusts. Love bombing pushes harder.

Constant availability. Someone who always answers within a minute may be attentive. They may also have nothing else going on, or want to know where you are. Availability and reliability are different things.

Only good news. An always-upbeat partner is pleasant company, and it can also be a form of distance. A 2024 study in Personal Relationships found that people higher in attachment avoidance shared positive events more than negative ones (Travers, 2025). Someone who never mentions a bad day may simply be cheerful. Or they may be keeping you at arm’s length.

Green flags by stage

What counts as a good sign shifts as things get more serious. A few concrete ones for each stage:

On a first date

• Their phone stays in their pocket.
• They ask a follow-up question, which means they heard the answer to the first one.
• They check that you got home.

In the talking stage

• They suggest a day and a place, not “sometime.”
• A direct question gets a direct answer, even if the answer is “I don’t know yet.”
• They do not push to be exclusive after three conversations.

Once you are exclusive

• Small promises are kept: the Sunday call, the book they said they would lend you.
• A disagreement ends with the subject settled or parked, not with a day of silence.
• You meet their friends, and your own friends are still on your calendar.
• When it goes public, it goes public plainly. A hard launch with your name attached beats a cropped hand.

What to do about it

1. Look for them on purpose. The quiet ones do not announce themselves. If you only register what goes wrong, a good person can come across as a dull one.
2. Follow one over time instead of collecting many. Ten green flags from a single date add up to a good evening, not a finding. One kept promise about something small, repeated, beats five compliments.
3. Say what you noticed. Plainly, once: “You texted when you said you would. I like that.” It costs nothing, and it tells them what matters to you.
4. Treat the absence as information. A few meetings with no green flags at all does not mean anything is wrong. It means there is nothing to build on yet. If what you see instead are red flags, or months of contact that nobody defines, you are closer to a situationship than to a relationship.

Manners and character are both worth having. Only one of them tells you what the next year looks like. Holding the door is manners. Keeping a plan with you when something more fun came up is character.

What the research says

Not much, on green flags as such. We looked for a peer-reviewed study that treats “green flags” as something to define and measure, and found none.

The best-known numbers come from a dating app. Tinder’s Green Flags Study was run by Opinium among 8,000 single daters aged 18 to 34 in the US, the UK, Canada and Australia (Tinder, 2024). There were 2,000 in each country, and fieldwork ran from March 6 to 18, 2024. Among women, the top green flags were a date making sure they got home safely (59%), putting the phone away (55%) and giving sincere compliments (50%) (Tinder, 2024).

Read it for what it is. It is a company survey, published by a company that sells dates, and the items it asked about are mostly manners. They are good things to do. They say little about month six.

The finding on upbeat partners comes from one 2024 study in Personal Relationships. We read it through a Psychology Today summary, not the paper itself (Travers, 2025). It describes an association in that study’s sample. It does not mean that a cheerful person is hiding something.

The phrase is young in its dating sense. Psychologist Roger Kreuz traces the relationship meaning to a Reddit post from July 2013, the earliest use he found. Psychology Today first used it in April 2019 and was using it routinely by about 2023 (Kreuz, 2025). Merriam-Webster now has a slang entry for it.