Sister-in-law

This happened today in the morning. last night. I was talking to my mother-in-law, and we had agreed that I would spend some time at her house, chatting and having a few mates, since I was free and my girlfriend was going to work very early. 9:30 am I woke up. My girlfriend had already left for work. As usual, I spent a bit of time on social media, and since I had woken up well...I started looking at this page a bit. Looking at the girls from today's poringa, my cock got hard like a rock. I like to give it a few spins. I always start with the category stories. Then some videos, and finally, I look for some other girl who publishes photos on Instagram and also appears in balls or sucking a cock. Redirecting to another page to see the video of that girl giving a blow job or getting it from the best. But since it was already late, I read some stories. Looked at some pictures and left for my mother-in-law's... we had agreed to meet at 10:30 am. But good. I arrived less than quarter to. We chatted for a bit with Carmen. Mate here, mate there. Until she got a message. She checks her phone, looks at me, and Carmen says:-ayyyy I have to go for a little while...I'm going two blocks away and I'll be back!!!!! I: okay...don't worry...I'll wait...I'll keep drinking the mate so it doesn't get cold. She waves goodbye and leaves. I stayed calm in the kitchen, drank mate until the tea got cold. At a moment, after having turned off the stove, I felt like going to the bathroom. I walked down the hallway and noticed that Victoria's room - my girlfriend's sister- was semi-open and she was sleeping on the bed. I kept walking to the bathroom and when I came out, curiosity got the better of me. I opened the door a bit more. A small beam of light entered through the window. My heart and cock were beating at a thousand. When I saw her sleeping almost naked with a very nice dress. The half-morning masturbation couldn't take it anymore. I pulled back the sheet and when I saw that Booty looking at me and telling me come on, already, I didn't give... more. I pulled out the camera's flash. I tried to take some pictures, but they came out very dark. It was on fire. I started touching myself and at the same time, there was the cum that woke up or arrived my mother-in-law. I couldn't get my hand off my cock. With great caution, I pulled back the sheets and continued with my masturbation, stopping in each detail of that Booty. To be able to look closely at that beautiful empanada encased in a pink thong. I don't know if I should continue with the masturbation, run the thong and bury my cock or make myself an idiot and go back to the kitchen in case my mother-in-law arrives. Noticing that it didn't stir when I lifted the sheet. I managed to take some more pictures. I got closer. I wanted to smell that pussy and savor it. But it was impossible. So I went to the bathroom to finish... squirting out a cum shot already large enough to fill the bidet. Clean up everything. Closed the bedroom door and went back to the kitchen. Now I can't get over wanting to screw my sister-in-law and waiting to repeat this sequence that I can't get out of my head. Eyyy if you made it this far, copy and leave comments. Leave the photos and comment on what you think. Is it wrong to want to screw my sister-in-law now?