Hmm...was a while ago that I tried that route. So I don't remember to well. I know my MC was cold towards Arthur at first, but mainly hurt and angry with Tobias. After he talked it out with Tobias, he decided to give Arthur a chance and they were having fun. Becoming friends. Even chose the shy flirt option with the herbarium. But then the well came up and suddenly I was railroaded into pushing him into it. I just wanted a little drama but my MC was never a cruel child, so it felt a bit to forced and out of character to suddenly have only that option. This was quite a while back of course, so maybe things have been refined since then. I'll have to try it again.
Edit: Oh yay! It didn't go nearly as bad this time. Finally, I can put that behind me. It might just be cause the story was in a much earlier state. =P