A Perfect Mistake

"Cassie, sweetie, please do me a huge favor." "What is it, Mom?" "Do. Not. Get. Pregnant." "Ever?" "I mean, don't get pregnant in your teen years." "Okay, Mom, I won't." My mom trusted me to keep my promise....I was 13 and in middle school at the time. The day before my 15th birthday, I have sex with my best friend's...