My GF's Hot Sister
So I moved in with my girlfriend and her family a few months ago and I just can't keep my eyes off my girlfriends 18 y/o sister. She is white. About 5'11 blonde hair with a lean figure and I can't leave out the perfect size bubble butt. One night I got out the shower and put on my pajamas on (which have a large cut out in the crouch area) with no underwear on.so I'm walking to my room and I hear her call me from her bedroom. So I walk in and asked what's up and slowly I realized her focus was somewhere else. She's looking straight at my c***. I casually look down and my thick black 11" c*** was hanging out of my crouch hole she was practically drooling. I quickly walked out and tucked myself in. Embarrassed I sat on the bed and tried to forget it even happened. A week goes buy and we are both home alone. ( you have to walk past my room in order to get to the bathroom) so with that being said she walked into the bathroom to take a shower. 25mins later I hear the door open and she walks past my room NAKED! I instantly got rock hard. She calls me into her room and pulls down my pants and shoves my c*** in her small mouth my c*** barely fit but she was enjoying it and trying to go deeper. I couldn't believe it was happening. Till this day she loves sucking my c***. We haven't f***** only because she said I'm way too big and it's gonna hurt. Thoughts? Should I keep this going ? Or end it?