And that means business as well as personal terms.
The now-engaged couple have filed a lawsuit against YouTube cofounder Chad Hurley, who posted video of the proposal at San Francisco's AT&T Field that ended up all over the Internet the next day.
Kimye allege in court documents, filed Thursday in Los Angeles Superior Court and obtained by E! News, that Hurley "tagged along with someone who was invited" to witness Kanye popping the question, but he was allowed to stay after signing a confidentiality agreement prohibiting him from posting videos or images from that night.
A number of media sites ran the fuzzy two and a half minutes of footage—prominently stamped with the name of Hurley's new website, MixBit—the following day.
West did allow cameras to shoot the event for possible use on Keeping Up With the Kardashians and E! News exclusively obtained a clip of the official footage to televise and post online the day after the proposal.
"Exclusive rights, such as those sold by plaintiffs to publication of video of the event, are particularly valuable," the lawsuit states. "If people violate these rights...they are of substantially diminished value."
The complaint continues: "Hurley proceeded to try to turn the event into one starring himself, broadcasting the images he knew were the exclusive property rights of someone else."
The couple are asking for unspecified damages for alleged breach of contract, fraud and unjust enrichment. Hurley has not returned requests for comment.
A number of friends and family members, including Kim's sisters, posted photos on Twitter and Instagram taken at the proposal—but aside from a pic of Kim flashing her ring, no one documented the main event, as per the bride- and groom-to-be's wishes.
—Additional reporting by Claudia Rosenbaum