1. Different values, dreams and goals
2. Different levels of commitment/ hopes and expectations for the relationship
3. Meeting someone else
4. Being too incompatible/ having few interests in common
5. Dishonesty/ having secrets (alcohol, cheating, a child by a previous relationship etc)
6. Jealousy
7. Lack of trust / betraying trust
8. Imbalance in emotional needs/ level of support both wanted and given
9. Communication problems
10. Being unloving, disrespectful, rude, uncaring, unforgiving or mean.
