You don't need your ex for that.Just start working on the idea with your current partner,but weeks in advance.Find little things to do with her,send her notes hidden in her bag,leave cuddly messages on her phone,blow lightly on her neck when she's watching TV,hold her hand lightly in the car,buy her an unexpected present and give it to her at an unexpected moment,make her an appointment at the hairdresser,offer her something sexy but tell her not to wear it outdoors,make her little dishes that are aphrodisiacs,buy a soft light for the bedroom,wear good cologne,look clean and well groomed,don't cut her off when she's talking,call her best friend and invite her over leaving them to chat,offer a candlelit dinner with people to serve you at home,tell her that you care and would like to keep it that way. Then slowly but surely her anus is going to start quivering and getting wet,just like her pussy,(take your viagra,give her some too),then as she gets cuddly and is sucking your cock,play directly with her anus pulling apart her cheeks,don't spit on it,just let it cream up on it's own.If her pussy is dripping and her stomach is groaning,then she's ready for you to just sit her up and place the head of your cock on the opening of her anus,(important;tickle the rear of her upper arms with your thumbs,blow on her neck-silence no words),then to your suprise her anus will open up and she'll slide all the way down to the hilt,rubbing and twirling on your cock.Rummage inside her intestines as you spread her pussy wide,now you can start talking.Tell her that there's a guy in the room with an enormous throbbing cock waiting in the shadows,dying to come over and plunge it into her gaping pussy.Rub lightly her clitoris as she will be moving up and down now,press onto her G-spot as you lick a nipple-push up,twist,tickle,rub,stretch and talk her into an orgasm that she won't forget as she squirts all over the room uncontrollably.Leave her a few minutes,wash your cock,serve her more champagne,lick her pussy,you'll still be hard because you mustn't come before,then push your way into her guts once,don't move just wait as you feel the cervix swelling,pull out very,very slowly.....then ram it up her arse hard,hard enough to widen her eyes with a silent scream,turn her over on the side with one leg up to her chest,then fuck her up the arse as hard as you want-she'll just love it!! Don't forget to slightly pull her hair and drag open her mouth,alternating with a hand trying to fill up her pussy as you whisper in her ear that the guy with the huge cock,(your hand),is fucking her at the same time. This recipe ALWAYS WORKS,but you have to work at it before,weeks before!!!