My 2 year old French lop is a cage free, potty trained house bunny. At night he sleeps in our room – either on the end of the bed, or next to us while we pet him, or on the floor. Suddenly out of the blue, he peed at the top of the bed while we were sleeping, near where the pillows are. It is so unlike him, he has never used the bed as a litter box. Now, 3 days later he did it again in the exact same spot! 2 times in a week worries me – I don’t want him to think our bed is a place to pee! : 
We woke up right away when he did it, I put him in his litter box near our bed and then we cleaned it up.
Any ideas on why this sudden behavior or how to prevent it? We don’t want to ban him from the bed, we love having him sleep with us and he is usually so good about now peeing o nthe bed! Not sure if this relates but for 4 months he never went to the bathroom on the couch and then he started peeing and pooping on it, and how i have to leave a litter box on the couch so he uses it. That couch litterbox has been there for about 5 months.
Thank you for any insight!