Eeeeeeeeeh, I wouldn't say 90%, but I do get tired of episodes that are entirely based around it. Overall, I do enjoy the show. I think the writing is pretty good and can't really think of an outwardly dislikable character. People say Pony Head, and yeah she's grating, but that's exactly what she's supposed to be.
the love triangle stuff is there to bring in that crowd that would otherwise ship the characters on their own - it hooks them and makes them want to see which of their head canons are gonna play out. It's a pretty solid marketing strategy, really, and doesn't completely interfere with an otherwise decent series.
And let's be honest: it's 10 times better than the character building eps they pull in SU.