- Mutual respect for one another.
- Mutual kindness for one another.
- Mutual attractiveness for one another.
- Mutual viewpoint. (Religion, Politics.)
- Good communication.
- Good sex.
- One or the other having money.
Most Helpful Girl
It's pretty much a tie between mutual respect and communication. I figure respect comes from communication though so communication it is.
Most Helpful Guy
All of them except G, in this order of importance: A, B, D, E, C, F. It is not that sex and attraction are unimportant but they are of little use without the other 4 as a prerequisite.