Serial daters, this service is for you. Cosmopolitan magazine has created a call-back service that allows women to pre-set a time that their phone will ring during a date. Ladies can select their choice of caller, such as a boyfriend, girlfriend or fake French lover. So if Sam proves to be an unsavory sort of fellow, Sally can slip right out the back door. “Every woman has been on a date from hell at some point. Now it’s as easy as picking up your cell to bail,” said editor-in-chief Kate White. The calls can come in immediately or in five, 15, 30 or 60 minutes. “Cosmo fake calls” were created for the Hearst magazine by Moderati, a Bellrock Media company. They can be found at Cosmo’s mobile site and cost a buck. The site which launched in February offers other critical dating services like daily horoscopes. Cosmo dubs itself “the relationship bible.” Men who are left in the lurch might have other choice words for the magazine.