This hits different when all you've ever known is one parent. Someday, I'll be parentless. My best friend, my mom, my roommate won't be here anymore. And I hope that day is far away, but if life has taught me anything, it's that your worst nightmare can become reality overnight. She’s been by my side through my darkest moments, loving me when I felt unworthy and staying when things were hardest. Some of my fondest memories are the simplest ones—doing laundry at the laundromat and grabbing…