Leonardo Dicaprio is set to wed his Israeli girlfriend BAR RAFAELI, according to US reports. The couple recently jetted off to Tel Aviv, Israel so the supermodel could officially introduce her beau to her family - and stage a secret engagement party. Friends of Rafaeli's tell American tabloid Star the couple hosted an intimate party on 11 March (07), disguised as part of the birthday celebrations for the model's brother NEIL. A source tells the publication the party was "for just a small group of close friends and family". Insiders claim the couple treated guests to fine chocolates and cupcakes before announcing their engagement with a champagne toast. The source explains, "Bar said that Leo had asked her to marry him and that she had said yes." And friends claim Rafaeli, the first Israeli model to appear in Sports Illustrated magazine, could become Mrs DiCaprio by the end of the year: "They'll probably have a private ceremony in Israel, then a big ring ceremony and party in the US toward the end of the year." The wedding will be Rafaeli's second - she was married to longtime friend ARIK WEINSTEIN in October, 2003, but the relationship soon fell flat and the couple divorced in 2005. Rafaeli started dating DiCaprio last year (06) after he split from longtime girlfriend Gisele Bundchen.