I might be wrong, but to me it was clear that she liked him, but gave up when he asked her to introduce him to Chitose, because she realized that he wasn’t seeing her like that at all, and was only interested in her friend.
Childhood friend had all the time in the world, but had decided to wait until the guy became interested in some other girl. I guess that's the old "a failed confession could end our friendship, so I better not confess" curse.
So her friend also had a thing for him, now I feel bad for her. Well, she had a lot of chances with him as his childhood friends, so if anything,she has herself to be blame.