Kylie Jenner kept her sunglasses on as she went to dinner in the dark Friday night in Calabasas -- apparently she doesn't want people to see into the windows of her soul right now, particularly with brother Rob dating her boyfriend Tyga's baby mama Blac Chyna.

She's probably crying behind those lenses because it's sad enough that she's dating someone who got "trapped by a stripper," in the now infamous words of her brother-in-law Kanye, but now her own half-brother is dating that very same stripper just to piss off the family! Ahhhh, Kardashian drama!