I molested my cat
That is shocking and makes me feel rather uneasy. Why would you ever do that to your cat?
I heard that doing sexual stuff to cute pets sometimes help people to relieve stress
I understand we all need to fulfill our sexual desires, but it is very illegal and it is very immoral to molest your cat and to harm it. Relieving stress should not involve you harming another living being and I would suggest that you put that cat up for adoption and then maybe you can contact professional help so that you could heal with your sexual problems.
Are you kidding me? I just wanted to cuddle the poor thing.
You should never be inappropriate with animals. It is best that you stay away from animals.