Not something I´m proud of

Arlight, so I´m 16 now, but at the time of this story I was fifteen. My big brother is 19 and had left for a 1 year of Afghanistan with the Marine Corps recently, and before he left he sort of last minute proposed and married his 18 year old girlfriend. They had been dating for a while and it seemed appropriate. Well after he left she was over at our family´s house a lot and all we really had to do was comfort her and sympathize. Well some time passed and one day she was over and it was only my mom and I. My mom had left to go run an errand and I found myself alone with her. She decides to go take a shower (and mind you we are very close by this time), and I decide to scare her in shower as she comes out. Icame.png, but I managed to scare the living fuck out of her. She then sent me out laughing of course. She comes out with looking so sexy with only one towel and sits down and starts drinking whiskey in the kitchen. I tell her to stop because my mom will be home shortly, but she ignores me and asks if I´ve had much experience with drinking at my age. I told I had some, but not too much. We then proceed to finish a bottle of tequila together, and we talk about my bro for a while. Mom still not home when she says ¨hey anon, you know you´re so much like your brother, you guys are practically the same person.¨ Flirty smile... Put hand on her leg, say she´s really similar too. Hardcore flirting. Then she asks if I could show her our new bedroom. Try to resist, tell her she has to go. She laughs as she LEADS ME BY FUCKING HAND TO THE BEDROOM. So turned on, but so ashamed. She opens the door, gets on the floor. Everybody do the dinosaur