plot represent ed and alice be engage . they live together and be live the dull life . he have sleep around before meeting alice . she have a lot less experience . she decide she need to sleep around before marrying . he very reluctantly agree they should both see other people for a while . at first he be not really into it . his wild day be behind him and he be simply content . until one day alice come back and tell him she make out with some random guy while who of course start to fall for her . of course this be a bad idea which cause extreme strain on the relationship . good movie . you can see the train wreck come but still good . worth a rental .