STEP BROTHER, STEP SISTER, TABOO, ROLEPLAY. I've been needing some new sports bras for a while now. As my step brother, you know this so you bought me two 2 new ons. You're such a sweetheart for doing this. I catch you staring at my hard nipples through my shirt since I'm not wearing a bra at all. I try them on right away while you're sitting on my bed. Turn around though so you don't see anything. The first one fits perfect! Keep checking myself out in it because there's a mirror to the side. You turn back around and admire my boobs in them. I do the jumping test to see if there's enough support. Was so excited to try on the next one I forgot you were still looking. Fine, you already saw some of my boob. You don't have to turn around for the next one I try on. You're getting hard finally seeing my full tits. Maybe if you buy me something else I'll let you touch and play with my breasts.