I chose to watch the movie because it had an interesting premise.
I'd personally recommend this movie. The movie is enjoyable and to watch the characters relationship grow as the movie progresses kept me watching.
It starts off light-hearted, however it begins to hint and then fully explore tough topics. They are important and I believe it explores them for the benefit of those who may not be fully aware or at all of what people in these situations are going through.
I haven't mentioned the topics involved as they would be spoilers and would ruin the movie, but more importantly it's essential that the viewer sees what anyone would see, the 'hints' you would see. Essential that you do follow it chronologically, rather than knowing the ending.
I personally prefer to watch this sort of movie alone, as I don't believe I can experience the movie the same if I'm with someone else. I would find it difficult to continue watching knowing someone else is watching with me. (That's a personal thing for me though, not saying you should, just in case for someone who shares my thoughts)
Covering these topics doesn't warrant the movie a 'thumbs up' because of what they are, it was much more than that. I believe it to be a good movie, worth the watch.
Have a good day :)