A few weeks ago I republished the events from 5 years ago when I set up my wife and she flashed the plumber. Although she was mortified at the time, she later admitted that it also made her extremely horny and we fucked like rabbits after he'd gone. I've been looking for opportunities since then but with no luck until recently, when we came out of lockdown 1, with a small leak in a flat roof extension. This is across the back of the house and overlooked by our bathroom and the back bedroom which used to be my son's, but since he left home my wife has used it very much as her dressing room. There is a great view into that room when standing on the flat roof. I had arranged for the roofer to call round and he wanted to come fairly early on a Saturday morning which suited me and it also dawned on me that here was a chance to catch her out again. Come the day and she was in the shower when he arrived. I told him just to head round the back and I'd join him shortly. In the meantime, I had adjusted the blinds in the room so that he could see in but she would not be able to see him as he did. I shot upstairs just as she had gone into the back room and hid, out of her sight, on the landing. She dried off, dropped the towel to the floor and paraded in front of the mirror checking her boobs, holding her tum in and running her fingers through her pubes. Seemingly satisfied, she then sat in front of the mirror to dry her hair. She was half turned away from the window, but he would have got a great view of her pussy in the mirror. I shot downstairs to see whether he was watching and, sure enough, he was engrossed as he looked through the window. Back upstairs and she was clearly oblivious as she continued to dry her hair. This of course meant both hands above her head, accentuating her large boobs. She also occasionally ran the brush through her pubes, then sort of played with them and her cunt lips. She didn't masturbate as such, but seemed to sort of generally rearrange things down below and have a bit of a rummage around. By this time her legs were well apart and he must have had a great view right up her cunt. She then stood up to start dressing, so back downstairs I went and shouted to the roofer as I came out of the kitchen so that he had time to move away. He seemed to move as though he had something large in his pocket - I can't imagine why! Within a few minutes he had gone and promised to get back to me with a price for the job. I went back upstairs and she was waiting for me. How long had the roofer been there? I don't know, I replied, maybe 20 minutes or so, why? He must have seen everything she said and then looking at me more carefully said - you knew didn't you? I don't know what you mean I said as I moved in on her. Fuck me, she said, I was even playing with myself, he must have seen the lot - the dirty bastard. It was clear by now that it was having the desired effect as she promptly told me to get my dick out and give her a good seeing to - who was I to argue. She bent over the bed and I moved her knickers to one side and eased myself in, she was very wet and clearly the thought of having been watched had had the desired effect. As I fucked her from behind I could watch her big tits swaying in the mirror which was a huge turn on for me and she then started to play with her clit as I kept hammering away from behind. You're thinking it's him doing this aren't you, I said. Yes she panted, as she just kept pushing backwards, all the while frigging herself as her tits swung free. There was no way I could last very long as, with a grunt, I shot a load into her. She wasn't quite there yet so I turned her round and went down on her as she ground her sopping, cum filled cunt into my face. Lick me you bastard she shouted as, with hips bucking up and down, she screamed out her orgasm. Bloody hell it was horny, and messy. It took a day or two for her to forgive me fully, but it was clear that she had actually really enjoyed the whole episode, although it could be interesting when he comes to fettle the roof - I wonder whether that will be the only thing he fettles?!