Fucking my ex

I went to my sister mom's house one day and after a while I was there alone, it was always a fantasy of mine to have sex in somebody's else's house knowing we could get caught not sure why but it turns me on. So I invited my ex over and we had sex in the living room on the couch and it was amazing he gave me head and I came twice on his face he gave me back shots like never before and my pussy started queefing I was embarrassed but he kept going then I started sucking his dick and he came a few times his eyes rolled back and started smacking my ass then he fucked me against the wall while fingering me and kissing on me it was amazing then as I got on top and rode him my puss started queefing again and we laughed and he just started kissing me pounding me from under but we were close to getting caught we both were about to cum but then we heard a car pull up it was my sister's mom but we didn't want to stop until we came as soon as we came we both jumped up and rushed to put our clothes on and I had him go out the back door but when she came inside it was pretty clear that I had sex you could smell it and my hair was a mess her mom just looked at me and said mhm I'll be in my room but then went to get some febreze I was completely embarrassed but also relieved our sex was 10 times more amazing