Ally is a woman who has many ex-boyfriends who turned out to be losers. Now she believes that she can't find a good guy. But when she runs into one of her exes who is now a 'Prince Charming', she decides to look up all of her exes to see if any of them have changed for the better. When she has trouble locating them, she asks her neighbor Colin, who sleeps with a different women every night and sneaks out the morning after to avoid talking to them, to help her. 美国队长的屁股也救不了老套的chick flick，何况还是假的。。whats ur # 觀感。新的总比旧的好，打死别吃回头草。就算后悔 也绝不能回头。第几个是最后一个？。Being in love happily means being your self completely。克里斯的肉体也拯救不了的无聊剧情。电影里的床品很漂亮，谁知道什么牌子的？。what is your telephone number? and what is your number?。为了克里斯埃文斯去的，本来就当爆米花片看的，却意外的有惊喜。最爱的人就在身边太美好了，就吃这一套。好甜的一对，好有爱的一家。。 电影改编自小说《黛丽拉和她的20个前男友》。 人缘极好的单身女郎艾莉（安娜·法瑞丝 Anna Faris 饰）忽然在杂志上读到 “女人只要睡超过20个男人，一辈子就可能单身”，这论点让她心惊，当下决定要回头寻找过去的“床友”。邻居柯林(克里斯·埃文斯 Chris Evans 饰)，他为逃避女人的情债而借躲进艾莉家，两人不打不相识，于是达成协议，只要柯林帮艾莉从”床友”们中找到理想的另一半，她就要无条件提供避风港让他躲女人！柯林像秘书般开始寻索并安排艾莉的行程，让艾莉和”回头草”们一一约会，而他也顺利在一夜情之后次次落跑成功。 就在艾莉还幻想这些前男友可能有长高变帅或功成名就的同时，她和柯林的盟友关系也开始有了变化……
