Everyone else gave good advice. Once RP stops being fun and starts to make you feel depressed it's time to move on to something else. Talk with your IC partner and let them know how you're feeling. Give the option of either chilling out and letting you go back to doing things that you normally enjoy or cutting the RP with them completely.
There is absolutely no reason why a pretend relationship should cause you so much grief. Take care of yourself and do what you need to do to be happy again. If they are a true friend they will understand!
There is absolutely no reason why a pretend relationship should cause you so much grief. Take care of yourself and do what you need to do to be happy again. If they are a true friend they will understand!