Doesn't even follow its own premise

The three principals are not the same people who have taken different life paths during 15 years - they're three completely different people! They're not intended to be, but they're not plausibly the same individuals who just made different decisions. Temperament, personality, tastes. They're as different as the characters played by actors in Cloud Atlas. Even if we concede the effects of being single vs married or discovering bisexuality, they're still totally different. And why would Pedro be an entirely different person in each scenario?

This is nothing like Blind Chance, Sliding Doors, nor any other alternate timelines movies. It's effectively just three short films dealing with romance featuring characters with the same names spliced together. A pointless exercise.