I have been dating a girl for 6 years. Things have mostly been great. The last couple years though I've been becoming more and more obsessed with her sister. She's younger, smaller, hotter, and honestly I love her sparky personality with natural mothering instinct and slight soft side for the right people. I think I've been calling for her hard and now I can't stop thinking about her all the time. Always buying her things and whatnot. I love my girl, I really do, but I feel like I'm dating the wrong sister sometimes.