After four years of dating, Jessica Simpson and Eric Johnson are finally set to say "I do" in Montecito, Calif.on Saturday, July 5 -- look back at their love timeline, their personal family photos, and more Four years in the making!

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July 29, 2010: Us Weekly exclusively confirmed that Johnson pulled out of his two-year business program at the University of Pennsylvania's Wharton School to keep close to the singer in L. "He doesn’t want to move to Philadelphia and leave her so soon after they got together," a source told Us. 7, 2010: Johnson officially finalized his divorce from Keri after five years of marriage. With their relationship still fresh, the couple came face-to-face with Simpson's ex-husband Nick Lachey and his girlfriend Vanessa Minnillo at L. Lachey and the former TRL VJ married in July 2011 and welcomed son Camden in September 2012.

They cited irreconcilable differences and neither received spousal support. PHOTOS: Jessica's Us Weekly covers November 2010: They're engaged!

Simpson's rep confirmed to Us that Johnson popped the question after nine months of dating.

Days later, Simpson was spotted wearing her gorgeous engagement ring during an appearance at Dillard's at Oak Park Mall in Kansas City.

The two began dating five months earlier while Johnson was still legally married to stylist Keri Johnson.

(Prior to, Simpson had some romance misfortunes with ex-husband Nick Lachey, John Mayer, and Tony Romo.) July 10, 2010: Whoa, PDA!

The couple passionately locked lips on a yacht on the Italian island of Capri during Simpson's 30th birthday weekend shindig.

She's "really happy," an insider told Us at the time. "' I hope Vanessa likes her clothes because I bought them for her, since Nick took all my money," Simpson was overheard telling her server.

Coincidentally, Lachey announced his engagement to Minnillo just five days earlier.