Depressed Stepmom Needs My Sperm

My stepmom Misty struggled with depression until we found out that my sperm acts as an antidepressant for her. I feel like she's started to get addicted to it though! She wakes me up before I go to school every day, and we even had secret sex in the laundry room during my dads birthday party! Today has taken it to a new level though, Misty called me out of school today so she could drain every drop out of me the whole day. I don't even know if I can last that long. She fucked me in the morning, during lunch, before and even after dinner! I don't think I will ever cum so much in one day ever again.