Post Malone has reportedly ended his engagement ... clearly him and Jamie didn't work out." Though the "Rockstar" hitmaker never revealed much information about his ex, he did share their journey ...

Post Malone's foray ... high energy up a tick. But Malone's pop hits got the biggest response: "Better Now" amid blasts of pyro, a hands-in-the-air "Rockstar" and a thrashing, full-throttle ...