It was six months ago when I was crossdressing and was wearing one of my sister's saree before her dressing table. I didn't realise I had not locked the door properly. Her bf had a habit of coming home to meet her without any prior calls to surprise her. Little did I knew I would be the one who was going to get surprised. He walked on me changing into her saree and I didn't know what to say. He warned me that he is gonna tell my sister and I was almost about to cry when he said he would let me go on this one if I gave him blowjob better than her. I had crossdressed before but never actually had sex. I was on my knees soon and for the first time I was seeing cock this close. It made me realise how much I liked it. My lips were soon licking and sucking his cock and making him moan. It wasn't long before my mouth was filled with his cum and he smirked. My sister never got to know and I still crossdress .