Looking back at his proposal to longtime love Kesha Ward at last year’s Met Gala, rapper and entrepreneur 2 Chainz tells PEOPLE the decision for such a grand romantic gesture was basically a no-brainer.

“I just knew it’d be historic. It would be in somebody’s Google search on down the line. It might be even in the history book and I’m just a debonair lil’ fella so I figured I — why not?” he said backstage on Thursday after headlining the Marquee Moments concert in Atlanta. (The event, organized by Coca-Cola and Holiday Inn, also featured Arrested Development, Big Boi, En Vogue, the Indigo Girls and others.)