Who called it quits?

Both have the right to call it quits. It shouldn't be just one person. Besides, I personally think that both parties should agree on things before breaking up. I guess we're all so used to girls being the ones to break up with the guys. There are only a handful of men who can actually break up with a girl. Usually, they'd make ways in order for the girls to break up with them.

Either the male or the female has the right to call it quits in a relationship. It really shouldn't matter which gender calls it quits.

Both, how can it be only a male or female!

I believe that it is ok for either the male or female to call it quits in a relationship. If it is not working out and there is a reason for it, then either one can do it. If you are not happy in a relationship, you have every right to end it. It is not something that is determined by gender.