Now that we had broken the boundaries of our once flirting into full on physical lust, things went from good to better with Sarah very quickly. I owed her one (or two) for the fantastic wank all over the table. That night we spent the evening texting and sending pics of each other wanking off. By the next day our sexual attraction was animalistic. We'd arranged to meet at lunchtime in a stores cupboard at the back of her teaching room. No sooner had the bell went and the kids emptied out when I got a text telling me to get my arse through to her room. We went inside her cupboard and wisely took the key to lock it in with us. The sense of people everywhere and us attacking each other in lust was a huge turn on. Sarah pawed at my zipper and felt my instantly hard cock. She went down in a squat position and I fed my cock into her warm and eager mouth. I pulled her back up and could taste my meat on her breath. I said I had to return the favour and lifted her airy summer dress. Again she put her left foot on top of a chair as I started to lick up and down on her clitoris. My fingers were quickly inside her pussy as she grabbed a hold of my head and pulled me into her as she rubbed her wet pussy on my face. Just at this point her room door opened and two pupils came in looking for her. As I was down on my knees, I looked through the keyhole and could see that the two pupils had taken a seat. Quietly we whispered about what to do. She was all for going out saying she'd take them away so I could make an escape. I convinced her that it'd look suspect about her being in a locked cupboard. We stayed there almost frozen to the spot for what must have only been a minute or so, but felt like forever. I started to finger her slowly and then stood up silently and rubbed my bellend up her wet pussy. My cock head slipped inside and she started to groan before I put my hand over her mouth and kept her silent. I started to thrust inside her with more vigour and grabbed onto her ass. The position was awkward but the whole situation wad surreal and pushing boundaries. The two visitors left and we continued to fuck standing up and facing each other. She said she wasn't on the pill and wanted me to cumm in her mouth to save mess and she wanted to taste her pussy from my cock. She sat on the seat in the cupboard and I grabbed her hair, pulled her face sideways and started to slap my 8" of thick cock off of her face before thrusting it hard into her waiting mouth. I wanked myself as she worked her mouth and magic over my hard cock. I said I was cumming and she grabbed onto my ass and dug her nails in. This sent me over the edge and I silently unloaded a hefty load into her mouth. She kept wanking me until every drop was swallowed and then stood up to kiss me with my spunk still in her mouth. We made our way out to have food and planned our next fuck... More to come