I was in a public library in an aisle of bookshelves and this guy I had seen several times ( another student) was in the same aisle of books further down - I was wearing no panties as usual and as and as I turned to say hello he put out his hand and pulled up my skirt to expose my clean shaven pussy and I was worried in case anybody saw him do this- I was so surprised but there was something exciting about it! just as suddenly he squatted on his haunches in front of me and put his hands either side of my pussy- gently pulling it open and as he did this he exposed my clit and he put his mouth to my pussy and while his tongue teased my clit his hands started to fondle my bottom and his fingers massaged my anus - I just leaned back against the books holding my skirt up and let him do it- I really enjoyed it- the thought that we might be seen was a massive turn on- I had an incredible orgasm and then turned my back on him and bent down as though to find a book on a low shelf- and he lifted my skirt from behind and put his penis into my wet vagina and fucked me from behind till he nearly came- then he asked me to turn to face him and as I did - he held my skirt up high so he could see my bare pussy properly and I masturbated while he watched until I reached an orgasm again- quite unaware and not really knowing if we had been seen- he then took his penis out of his jeans and I could see it was very hard- so I bent down, took it in my mouth and sucked and licked it until he took it in his hand and masturbated until he came all over my face- I cleaned up as much as possible with a tissue in my pocket then we both left !