Let her carry on

You look at Jane and she gives you a facial expression indicating she wants to see what Jessica does whilst she thinks shes alone. You are able to get around the corner in the room but still able to watch from a mirror in the room. Your both out of earshot from Jessica and Jane has you sit her in a chair and she hands you her phone and asks you to film what Jessica does next, she plans to keep this incase he finds out about the two of you so that she has something to use back on him, luckily from the angle were hidden in Jack looks awake. Jessica is your Ex-Girlfriend and so shouldnt be sleep abusing Jane's husband. She has managed to get him fully hard and is still thinking that she is alone, she gets up and goes to the window overlooking the field and cant see us out there but she still thinks that we're out there, she locks the front door, to stop us coming in without making a noise that will give her a heads up. She then takes off her dress, which really accentuated her 38DD boobs which apparently were not being pushed up by a bra. She was wearing crotchless panties and a garter belt with suspenders. Her awesome ass was covered but the cutaway was showing a lot of the cheeks. She then went to her handbag fumbling for something and then it was like she found what she was looking for but it wasnt clear what it was from out angle. She headed back to him and fumbled with the thing in her hands, now it was clear what it was... a condom. Jane's eyes widened when I looked back at her, she put her hand over her mouth from the shock of this change in Jessica's behaviour. I mouthed to her "what should I do?" and she signalled that I should let this play out. I turned back to the events unfolding at the couch and she was fitting the condom onto his cock with her mouth. She then stood up and and started to straddle him, being careful not to make to much noise or movement in case it woke him. She grabbed his cock and lined it up with her dripping snatch and started to ease it into her, she must have been slippery as his cock slid right in to the hilt. She threw her head back and silently had an orgasm. The cameraphone was getting her facial expressions as she continued to move her hips, after about five minutes he must have been cumming into the rubber as she rode it through and then gently got off of him, his cock slipping out of her with a loud plop. She obviously planned to leave no evidence of what she had done so slid the rubber off and then poured the contents down her throat, she then sucked his cock clean and put his cock back in his trousers. She turned around to get her dress to put it back on and as she was bending over picking it up in front of him he started to wake up, she was oblivious to this and he must have been able to see her dripping freshly fucked pussy and her pendulous tits as she put her clothes back on. As she pulled it over her head she turned to face him and he pretended to be asleep again, he then faked waking up and spoke to her "hey Jessica, is that you just leaving?" she replied "hi Jack yeah, feeling quite tired as I had a hard workout today, your lucky you just woke up as I just got changed and you might have ended up with an eyeful if youd woken earlier", he replied "haha, oh well maybe next time" and he winked at her. It was obvious that he didnt know she'd just fucked him but he was lying about watching her get dressed. I had worked my way back to Jane who had been to the bedroom and changed into her sleepwear and a bathrobe as well as washing the mud and cum off her. I asked her what to do and she said to slam the backdoor so they know we're back.