Why couples click and clash, explained with research

Start with a topic

Attachment styles
How you seek closeness and respond to distance: secure, anxious, avoidant and fearful-avoidant.
4 guides · 2 sources · Strong evidence
Browse attachment styles
Conflict patterns
Criticism, contempt, defensiveness and stonewalling, with the repairs that work.
4 guides · 2 sources · Strong evidence
Browse conflict patterns
Temperaments
Sanguine, Choleric, Melancholic and Phlegmatic: your natural energy and emotional style.
4 guides · 3 sources · Historical model
Browse temperaments
Love languages
How you give and receive care, and how to ask for what you need.
5 guides · 2 sources · Mixed evidence
Browse love languagesFind a guide
17 guides

Secure attachment style
Comfortable with closeness and with independence.
2 min readRead
Anxious attachment style
Wants close connection and worries it may not last.
2 min readRead
Avoidant attachment style
Values independence and finds heavy emotional demands draining.
2 min readRead
Fearful-avoidant attachment style
Wants closeness and fears it at the same time.
2 min readRead
Criticism
Attacking the person instead of raising the issue.
2 min readRead
Contempt
Treating a partner with disrespect or superiority.
2 min readRead
Defensiveness
Protecting yourself by deflecting responsibility.
2 min readRead
Stonewalling
Withdrawing from the conversation when overwhelmed.
2 min readRead
Sanguine: The Enthusiast
Sociable, expressive and optimistic, a partner who makes ordinary days feel shared and alive.
6 min readRead
Choleric: The Leader
Decisive, ambitious and dependable, a partner who shows love by solving problems and building a secure life.
6 min readRead
Melancholic: The Deep Thinker
Reflective, detail-minded and deeply loyal, a partner who wants real depth and gets there carefully.
6 min readRead
Phlegmatic: The Peacemaker
Calm, patient and reliable, a partner who keeps the peace and gives a relationship its stability.
6 min readRead
Words of Affirmation
Using spoken or written language to express appreciation, love, and emotional validation.
5 min readRead
Quality Time
Focused, undistracted attention—shared presence where listening and engagement are prioritized.
5 min readRead
Receiving Gifts
Tangible tokens that symbolize thought, effort, and remembrance; value is in meaning rather than price.
5 min readRead
Acts of Service
Practical, helpful actions that reduce burden and demonstrate care through doing.
5 min readRead
Physical Touch
Tactile closeness and physical contact used to express warmth, safety, and belonging.
5 min readRead
Go further
Find your own pattern
- Love language testWhat is your love language?
- Temperament testWhich of the four temperaments are you?
- Attachment style quizWhat is your attachment style?
- Couples conflict testWhy do we keep arguing?
How we compare
Every claim about another test is checked on its own site and dated.
- The best free love language tests, comparedFive free tests side by side: how long they take, whether they ask for your email, what they measure and what you can do with your partner afterwards.Read the comparison
- Affinity Test vs the Official Love Language QuizThe official quiz is the original and it is free. Here is what it does better, what we add, and how to choose.Read the comparison
- The four temperaments vs 16Personalities, for couplesTwo ways to describe personality: an ancient four-part lens and a modern 16-type test. What each is good for when you are trying to understand a partner.Read the comparison
See how you and your partner fit
Take the free test, then invite your partner to see how your styles meet.
Find our affinity