i didnt mean to fall in love with my step-brother... - mark lee | 19 years old valencia jo santos | 16 years old - Valencia and Mark are step-siblings, they've always hated each other, but now that their siblings they have to learn to like each other. - "Valencia Santos, you're my new step-sister?" "Yeah, better get used to it!" "I hate you, and I always will." "Same back at you."