Hyperion Cantos. The beginning was incredibly promising but then it all went to hell with the magic Mary Sue type girl that deflated any stakes to zero and one of the most insufferable baffoons for the main character. Ah yes and the romance between those two was an actual joke, one-dimensional, unjustified and kinda creepy. By the end of the series I was seriously pissed off at the author for squandering all of the potential.