This is a very cute way to start a relationship. And I do like the fact that they are [unconsciously] already starting out as a couple rather than just two friends. I don't mind friendships before relationships, but sometimes I want to see my yuri with a pair who automatically go towards attraction for one another rather than 30000 pages of 'we're just good friends'.
That is, to say, I know it isn't explicit, but that the is feeling I get from their interactions with one another.