This isn't yuri. If the tag doesn't represent the actual content, then what's the point? I guarantee if you slapped the yuri tag onto this manga right now, you'd have a lot more angry people in this thread. How can we rely on tags if we leave their definition ambiguous? Why should we humor a...
I hate whenever romance stories introduce new romantic interests. It just slows down the pacing and hinders the development of the actual plot we signed up for. Like, you go into a story thinking it'll be a cute romance between two characters but later down the line it becomes a harem.