My god, that ending was terrible. How could just be no resolution like that? I don't like sad endings, but I would have preferred her being shot down to this.
And to you all saying that they obviously get together and that this is still a "good" ending, you don't know that. Matsuri could just be really awkward after the confession because she is now coming to terms with the fact that she likes her back, or it could be because Matsuri doesn't like her and is confused about how to turn her down in a way that will keep their friendship. It could be either.