Well I just kinda failed to see how those words mean she isn't stuck in it anymore. Like she had fun and knew that her love had its value? Then that means she didn't get hurt in those times? How about time when Fuwako wasn't there with her but the fiance instead? And if she was already moved on, how about showing that she is happy with someone else instead of that? Of course she has to move on now, the marriage is coming, like I said, if she can't then it's pure masochistic.
And well, while it's true that it's comfortable at that time, it's hard for me to see how it still didn't hurt Arisa staying friend with Fuwako while knowing her feeling would never get reciprocated. So it's like comfort now, then hurting forever. Or like, even knowing her fear, just cut tie and even if she would get hurt, at least she would be able to see more options. Improving, accepting, aren't those just our head-canon? Do we know for sure how Arisa was feeling then? At least if she just cut tie right away, that 1.5 years would be used for a better result then this "have to move on because the marriage is the deal seal". And tbf, I only said she was selfish "in my eyes". It's normal if you feel otherwise.
