My boyfriend's friend pleasured my roommate while I lay hidden under the blankets, enjoying the view

I'm a bi-curious vixen with a penchant for pleasure. My boyfriend has a friend with a massive member, and I've always been intrigued by his size. When my boyfriend was away, I invited his friend over. While we were in the bedroom, my roommate joined us, revealing her stunning curves. The guy immediately went for her, and I hid under the covers to watch.As they started, I could feel my own excitement growing. I could hear her moans and the sounds of his throbbing cock penetrating her. I couldn't resist the urge to touch myself, rubbing my clit through my panties. The sight of her being pleasured by his big dick only fueled my desire.I could see part of the action from my vantage point, and it was a sight to behold. His huge cock moving in and out of her, stretching her pussy wide. I could tell she was enjoying every moment, just like me. The experience was so arousing, and I knew I had to have more.