The story about career difficulties and about their professional rivalry is much more firmly center-stage than the romance, which I suppose works well because it's the more compelling of the two. (Though, to be fair, it works—two men increasingly obsessed with each other over their job; why not make it overtly romantic?)
It really buys into the idea of a decadent but decaying life for actors, with amibtions, casual polyamorous relations, deceptions; a glamorous, unattached and frivolous lifestyle with constant moody ups and downs. It's not sweet at all—honestly, when they act even just a little bit plausibly cute and lovey-dovey for a few moments near the end it feels like a weird 90° turn from where things had been going (though it's cathartic to have some genuine affection floating around at the very end, so I'm not complaining).