The Laws of Love

The Pendragon rule books has a list of these, but for a later period.
At the start, these 12 are the only guidelines.
The later list is a development after much refinement through the Courts of Love.

The Twelve Laws of Love

Andreas gives us the twelve laws that Cupid, King of Love, would have every lover obey. These are:

1.
Thou shalt avoid avarice like the deadly pestilence and shalt embrace its opposite.

2.
Thou shalt keep thyself chaste for the sake of her whom thou lovest.

3.
Thou shalt not knowingly strive to break up a correct love affair that someone else is engaged in.

4.
Thou shalt not choose for thy love anyone whom a natural sense of shame forbids thee to marry.

5.
Be mindful completely to avoid falsehood.

6.
Thou shalt not have many who know of thy love affair.

7.
Being obedient in all things to the commands of ladies, thou shalt ever strive to ally thyself to the service of Love.

8.
In giving and receiving love's solaces let modesty be ever present.

9.
Thou shalt speak no evil.

10.
Thou shalt not be a revealer of love affairs.

11.
Thou shalt be in all things polite and courteous.

12.
In practicing the solaces of love thou shalt not exceed the desires of thy lover.