I have encouraged my wife for years to take a lover and although she has come close she has only ever really kissed and snogged other guys but last Friday that changed. Sarah has always admitted when she likes somebody but when she said she liked Robert I thought this may be the time. Robert is a dad at our local school and Sarah and him have flirted for 6 months or so. Last Friday Sarah went to our local with some girl friends and I said as she left try and pull tonight so later when watching TV I recieved a text saying Robert was there and was very flirty offering to walk her home Sarah said it was my choice but she would like to expore where it went. I replied saying go ahead I would go to bed but stay awake to check she was OK. Just after 11.00 I heard giggling and peeping through the bedroom curtains I could see them kissing passionatly they were clearly into each other and I could see Sarah sqeezing his cock through his jeans whilst he groped her arse. I watched and wanked willing them both on and after 20 minutes they whispered and Sarah opened our front door so they could sneak. Sarah appeared in our bedroom 5 minutes later whispering that she had told Robert she was checking I was asleep she said I had to decide there and then was this what I wanted she admitted she was desperate for him I immediately agreed. Sarah changed her tights for black over the knee socks and left the room still in her grey mini and heels. Soon afterwards I snuck down stairs and listened at the lounge door I have never felt hornier I could hear Sarah panting and saying harder I shot and went back to bed. About three hours later Robert finally left I had not slept and had suffered every emotion anger, jealousy but mostly pure sexual torment. When Sarah came to bed I pretended to be asleep but she cuddled into me and started whispering what a slut she had been she started to stroke my cock all the time saying what she had been doing. Robert was a much better lover than I was, his cock was bigger he had huge balls and could make her cum with his cock something I could not, she held nothing back and I loved the torture she then said I could not fuck her but she would wank me if I went down on her and licked Robert's cum from her. I went down for ages and she finished me by hand whilst telling me how Robert had had her. This may sound awful to most but I can't wait for her to get home tonight I know she is with him I love the torture it is the best turn on.