1. Affairs/infidelity/cheating (see: Surviving Infidelity and Infidelity Warning Signs). This includes emotional infidelity, one-night stands, internet relationships (including ‘sexting’), long- and short-term affairs and financial infidelity
  2. Sexual problems, particularly loss of libido (male and female) and uncertainty about your sexuality (are you bisexual?) or your partner’s sexuality – could he or she be bisexual?
  3. Significant differences in core values and beliefs
  4. Life stages – you’ve ‘outgrown’ each other or have ‘changed’ significantly for whatever reason
  5. Traumatic and/or life-changing events (see also: Brain Injury Symptoms)
  6. Responses to prolonged periods of stress, such as work-related stress, long-term illness, mental health issues, financial problems, problems with the children, infertility… the list could go on!
  7. Feeling bored in or with your relationship
  8. Dealing – and coping – with a jealous partner
  9. Having ‘blended’ family issues (see: My Partner’s Children Don’t Want to Know Me)
  10. Domestic violence, which includes verbal as well as physical abuse: THE most serious relationship problem (see: Signs of an Abusive Relationship)
  11. Knowing you shouldn’t have got married in the first place! (See my relationship or marriage compatibility test: Stay or Walk Away)
  12. Lack of responsibility from one partner regarding finances, children, health and many other issues (see: Children in the Middle)
  13. Unrealistic expectations – still thinking your partner/spouse is the princess or the knight, and not seeing the ‘real’ human being
  14. Addictions – substance abuse, gambling, sex… anything that’s become an unhealthy preoccupation (see: Alcoholism Stages and Living with an Alcoholic)
  15. Excessive reliance on social media, to the detriment of the relationship (see: Facebook Problems)
  16. Lack of support during particularly difficult times from people that matter to you
  17. Manipulation of, or over-involvement in, your relationships with family and/or friends (see: Getting the Best Relationship Advice)
  18. Lack of communication about important matters (see: Break-up Prevention Kit)
  19. Poor division of (or one-sided lack of responsibility for) chores and tasks. It’s not only women who complain about this relationship problem!
  20. Perceived lack of concern, care and consideration/attentiveness… feeling like the relationship is one-sided is a big one!
  21. Significant personal disappointments and traumas that lead to a change in relationship dynamics (see: Your Partner in Prison)
  22. Long-term depression or other mental health issues suffered by one partner – or both (see: Natural Depression Treatments)
  23. Significant differences in opinion on how to discipline or deal with the children (see: How Divorce Affects Children and Children in the Middle)
  24. Long-term stress, particularly when not taking responsibility for doing something positive to address the cause, or learning how to deal with it if it can’t be changed (see: Stress and Your Relationship and Adrenal Fatigue Symptoms)
  25. An unsupportive partner during pregnancy and/or significant problems after the birth of your baby, or lack of support with child-rearing (see: How to Deal with a Birth Trauma and Before You Consider Suing for a Birth Trauma)