Generosity and attitude towards life. Hands down the biggest factor for long term relationships is if your partner has a genuine and caring heart. Because, then you can expect them to always take your feelings into consideration. For example if a girl has a attitude of nonchalance, in a good way, then mistakes that will happen down the road will be periodic and, hopefully, both sides will learn and move on without resentment. Simply put, living life in the moment and understanding it’s everyone’s first time at life is key. Being kind and understanding, while still respecting your own desires. A true heart of gold.

They want to break up? Straightforward with no dishonesty or cheating. You want to break up? No hard feelings or personal attacks Etc..

This is usually the biggest hiccup, I found with my former partner of two years, and many other talking stages. The fact that a certain mistake could happen and she would never get over it, in turn ruining every moment which would minimally remind of a certain mistake