In celebration of an engagement, why not gather friends and family over to watch some romantic movies with plenty of food and drinks. There is no short supply of plenty of tear jerking, laugh out movies that celebrate love (or the possibility of love).

It Happened One Night (1934) Starring Clark Gable Claudette Colbert and Walter Connolly
The Philadelphia Story (1940) Starring Cary Grant, Katharine Hepburn and James Stewart
Some Like It Hot (1959) Starring Marilyn Monroe, Tony Curtis and Jack Lemmon
Manhattan (1971) Starring Woody Allen and Diane Keaton
Annie Hall (1977) Starring Woody Allen and Diane Keaton
The Princess Bride (1987) Starring Cary Elwes and Robin Wright Penn
Moonstruck (1987) Starring Cher and Nicholas Cage
A Fish Called Wanda (1988) Starring John Cleese, Jamie Lee Curtis and Kevin Kline
When Harry Met Sally (1989) Starring Billy Crystal and Meg Ryan
Pretty Woman (1990) Starring Richard Gere and Julia Roberts
Sleepless in Seattle (1993) Starring Tom Hanks and Meg Ryan
My Best Friend's Wedding (1997) Starring Julie Roberts, Dermot Mulroney and Cameron Diaz
Four Weddings And a Funeral (1997) Starring Hugh Grant, Andie MacDowell and James Fleet
The Wedding Singer (1998) Starring Adam Sandler, Drew Barrymore and Christine Taylor
Sideways (2004) Starring Paul Giamatti, Thomas Haden Church and Virginia Madsen
Eternal Sunshine of the Spotless Mind (2004) Starring Jim Carrey, Kate Winslet and Tom Wilkinson
Definitely, Maybe (2008) Starring Ryan Reynolds, Rachel Weisz and Abigail Breslin

An engagement party should be kept to a simple affair with a few select friends and family members with party supplies, decorations, movies, food, and drinks. Family or friends may consider keeping the engagement party on the hush hush to really surprise the newly engaged couple.