It's about a man and a woman that meet a party near London but don't really care for each other, they some how end up sharing a taxi back to London he invites her in and they end up spending a week together making love before he goes home. They vow not to fall in love but of course they do and he ends up leaving to go home. She realizes she really loves him and she is miserable withouth him and goes to find him all the time he is feeling the same way. I just need the title of the movie. I think if I remember the tilte is ironic in respect to the plot
