It's a good sweet movie. There are no sudden twists or love triangles and major issues get resolved quickly. The movie is pretty PG so if you want something even remotely sexy or sensual, this isn't the show for you but the main lead are very sweet together and they have great chemistry. The actors are very attractive and I love the interaction between the leads and the supporting characters. I also liked the fact that the problems that the characters faced had nothing to do with their sexuality but rather their own problems. I also appreciated that this BL had characters out of high school and college. I also appreciated that while the female character was the antagonist in the movie she wasn't evil and her arc had nothing to do with trying to date one of the leads, unlike most BLs.
I don't think it's worth a re-watch though if you've seen it once you aren't gaining anything by going back.