Uma Thurman will wed her boyfriend in secret this summer, it was claimed yesterday. So not so secret really! The Kill Bill actress is said to be planning to walk down the aisle with US hotelier Andre Balazs on a secluded island. A source said: "They can't keep it a secret much longer."And her ex-husband, actor Ethan Hawke, has given his blessing to the marriage, friends say. Ethan told a pal: "They're a good match. Sometimes I think he makes Uma happier than I did. And I want her to be happy." Sources say the wedding could take place on the French West Indies of St Bart's - where Thurman and Balazs have been photographed on holiday together.He has been dating Thurman, 36, for three years.