Red flags
Warning signs that a relationship may be unhealthy or abusive.
Red flags are warning signs that a relationship might be unhealthy or harmful. Things like someone checking your phone, telling you who you can see, or making you feel like everything is your fault.
Red flags are warning signs that a relationship might be unhealthy, controlling, or heading towards abuse. They're the behaviours and patterns that suggest something isn't right — even if the relationship feels exciting, intense, or loving in other ways. Learning to spot red flags is one of the most useful things you can do for yourself, because unhealthy relationships rarely start obviously bad. They build up gradually.
- Red flags are warning signs of controlling, manipulative, or abusive behaviour in a relationship.
- They can be hard to spot at first — especially if it's your first relationship and you don't have much to compare it to.
- A single red flag doesn't always mean the relationship is abusive. A pattern of them is what matters.
- Red flags show up in romantic relationships, friendships, and online interactions.
- Trusting your gut matters. If something feels off, it probably is.
[DIAGRAM: Visual checklist of relationship red flags — controlling behaviour, isolation, jealousy, pressure, put-downs — with green flag comparisons]
Common red flags
- Checking your phone, messages, or social media without permission or expecting to have your passwords
- Getting jealous or angry when you spend time with friends or family
- Telling you what to wear, how to look, or who you can talk to
- Pressuring you sexually — guilt-tripping, sulking, or not accepting "no"
- Put-downs disguised as jokes — "I'm only joking, you're so sensitive" when they've said something hurtful
- Love-bombing early on — overwhelming you with attention, gifts, and declarations of love very quickly, then using that to control you later
- Isolating you from friends and family — "They don't understand us" or "I just want you all to myself"
- Making you feel like everything is your fault — twisting arguments so you're always the one apologising
- Threatening to hurt themselves if you try to leave or set a boundary
- Monitoring your location or demanding to know where you are at all times
- Extreme mood swings — really loving one moment, cold or cruel the next, leaving you walking on eggshells
One of these on a bad day doesn't necessarily mean abuse. But a pattern — several of these happening regularly — is a serious concern.
Green flags (what healthy looks like)
It helps to know what healthy looks like too:
- They respect your without guilt-tripping you
- They're happy for you to spend time with other people
- They don't check your phone or demand to know your whereabouts
- They listen when you say no — to anything, at any point
- Arguments happen, but they're resolved through talking, not manipulation or threats
- They build you up rather than tear you down
- You feel more like yourself around them, not less
Why red flags are hard to spot
In your first relationship, you don't have a baseline. You might think jealousy means they really care, or that checking your phone is just because they're insecure and need reassurance. Controlling behaviour often starts as things that feel flattering — intense attention, wanting to be with you all the time, getting protective.
The shift from "intense" to "controlling" can be gradual. By the time the behaviour is clearly problematic, you might already feel too emotionally invested, too isolated, or too confused to see it clearly. That's exactly how it's designed to work.
Things people get wrong
"Red flags are only about physical violence." Most red flags are emotional and behavioural — control, manipulation, isolation, pressure. Physical violence is usually one of the last things to appear, not the first.
"If they apologise, the red flag doesn't count." A pattern of harmful behaviour followed by apologies and promises to change — then the same behaviour again — is itself a red flag. It's called the cycle of abuse.
"Red flags only apply to romantic relationships." Friendships can have red flags too — possessiveness, jealousy, manipulation, and controlling behaviour all show up in friendships.
Things people ask about red flags
What if I only notice one red flag?
One isolated behaviour doesn't always mean the relationship is unhealthy. But pay attention. If it happens again, or if other red flags start appearing, take it seriously. Trust how the relationship makes you feel overall.
What if I recognise red flags in my own behaviour?
That's actually really self-aware. If you notice controlling, jealous, or manipulative patterns in how you treat someone, you can work on changing them — ideally with support from a counsellor. Recognising it is the first step.
How do I bring up red flags with a friend who's in a bad relationship?
Gently, without ultimatums. Say what you've noticed and that you're worried — but don't force them to act. Pushing too hard can drive them closer to the person you're worried about. Let them know you're there when they're ready.
What if I'm not sure if it's a red flag or just a normal argument?
Healthy couples argue. The difference is in how it's handled. If arguments involve respect, listening, and resolution — that's normal. If they involve blame, threats, silence treatment, or making you feel crazy — that's a red flag.
Where to get help
- Childline (0800 1111) — free, confidential support for under-19s about any relationship that doesn't feel right.
- Women's — support for anyone experiencing , including young people.
- Galop — specialist support for LGBTQ+ people in unhealthy or abusive relationships.
- The Mix — support for under-25s on relationships and difficult situations.
Red flags are warning signs that something isn't right in a relationship. They're the behaviours that suggest someone might be controlling, manipulating, or mistreating you.
Some examples: checking your phone without asking, getting angry when you see your friends, telling you what to wear, pressuring you to do sexual things, putting you down and then saying "it was just a joke," making you feel like everything is your fault, or wanting to know where you are every minute.
One of these on a bad day doesn't always mean the relationship is bad. But when several of these things keep happening, that's a pattern, and patterns matter.
Red flags can be hard to spot, especially in your first relationship. Controlling behaviour often starts as things that seem nice — like wanting to be with you all the time or being really protective. It can take a while to realise those things have crossed a line.
Healthy relationships look different. In a good relationship, the other person respects when you say no, is happy for you to see your friends, doesn't check your phone, and makes you feel more like yourself, not less.
If something about a relationship doesn't feel right, trust that feeling. You can talk to someone you trust, or call a helpline like Childline on 0800 1111.
Related terms
Need to talk to someone?
- ChildlineAny issue affecting under-19s. Abuse, bullying, mental health, relationships, sexual health.