I sat up and pushed him back into his seat. I looked around quickly to make sure no-one was looking and then I undid his jeans and took out his cock. I felt a little shiver of pleasure when I looked down to see that, just as I had hoped, his cock was really hard and looking as long and thick as ever in the flickering light from the cinema screen. I started kissing his neck and mouth and rubbing his cock firmly and slowly with my left hand. It felt so hard and big in my hand that all I wanted to do was take off my jeans and climb on top of him, but that would definitely have blown our cover. He was leaning back in the cinema seat with his eyes closed. I enjoyed watching the pleasure he was obviously feeling as I stroked his huge cock faster and faster. He looked at me and told me to put it in my mouth.
Without looking around I leant over at once and took as much of it in my mouth as possible. It always feels so good to have his cock in my mouth but it felt especially good this time because I was aware that the middle-aged couple could turn around at any moment and see me leaning over my boyfriend trying to get as much of his hard dick in my mouth as I could. I started to suck, slowly and rhythmically at first, from the bottom all the way up to the top, giving the top a little flick of my tongue before sliding my mouth all the way down again. I could hear his breathing get heavier and he moaned quietly. He had his hand on the back of my head and as I got more and more aroused I started sucking faster and faster, in long strokes, gripping him and rubbing him with my hand as well. I felt sure that the other people in the room must be able to hear the sound of me sucking my boyfriend's cock as it slid quickly in and out of my mouth but that only made me feel more turned on. I felt his hand tighten its grip in my hair and then I felt his semen gush suddenly into my mouth. I kept my lips tight around him and made sure I swallowed every last bit of it.
As his breathing subsided I sat up and leant back in my chair. He sat up to do up his trousers and then he turned and looked at me with an almost disbelieving look on his face. I smiled back, and just then the film started.