I'm half-and-half on this one. Like many, the BL couples are the only reason I stayed. They were A VERY good reason to say, I might add. The writing for them specifically was superb, cute, fluffy, interesting, all of it. The straight couples, and the lesbian couples, though, bored me.
If you aren't into BL, I wouldn't recommend it. If you are, it's a must-see.
And yes, (to me) the series is better than the movie.