Is it okay that I was accidentally blunt about not wanting to sleep with someone
How did it come out?
I didn't mean to be so cold, I just kept my mouth shut.
It is good to be honest and straight forward with people. Being honest can help someone move on from a relationship or reevaluate their life.
I won't apologize. I already got what I wanted.
While you say that what you said was an accident, you also admit that you got what you wanted. It sounds like you might need to apologize for the comment you made.