Thank you QueenofWands,
I am sorry for not being clear enough. The Destiny Cards is its own system, that does use a regular deck of playing cards and it is similar to Tarot, but not all the way.
Essentially, the 9 of Clubs is my birth card. And it has its own personality traits for people born with this card.
The Queen of Hearts represents someone who reflects me in some way and who I owe karmic debt. (I don't owe any money).
The 6 of Diamonds is someone I mirror traits to and he/she owes me karmic debt. I do know someone born with this card, and he hurt me profoundly, so I find it kind of ironic that someone with this card owes me karmic debt. I just don't know how it works or how I know it has been paid. You say 6 is a number of happy lasting - with this person who hurt, I was very certain that we could have lasted until he ended it.