Whatever you do, will you reap it back??

Do you believe in Karma??? If so, when will I be getting all the good Karma back???

I don't believe this, all the men I have met, liked and dated are coming from tragic relationships, or one that has left them hurt for years and years... Yet they come into my life, and I heal them or indirectly I did. They left happy, but what about me??? If there is Karma, are you ever going to pay me back for one lifetime (or happily ever after) with someone whom can return it to me??