Thinking about the implications of that line, and after reading last chapter, I wonder if Yuu is really in love with Touko or just deluded herself into thinking she is because, on her own words, she could only love Touko (chapter 10), probably because only Touko showed romantic interest in her and she had already rejected her male friend. Not just that, but also due to Yuu's strong desire to fall in love with anyone (that then became "I wish my heart would love Touko").
Even in chapter 39, Yuu's angst, loneliness and sadness seem to be much more about having lost her opportunity to fulfill her big dream of falling in love (since chapter 35, she thinks she never really fell in love and may never will) rather than having being rejected by the person she claims to love. Her hopes seem to be more about fulfilling said dream again, rather than meeting Touko. Even when she is thinking about Akari forgetting her senpai and getting with Doujima, she was probably thinking about herself and how Akari could move on but she cant because she could only love Touko (a reference to said line in chapter 10?) Correct me if I am wrong, please, but between Touko, Yuu and Sayaka, Yuu's love is the one that feels the less genuine. Like she is clinging to the belief she is in love with Touko because she yearns for love (love anyone at all, not just Touko). Previous chapters seem to point that Yuu's love is real (with her helping Touko change and so on) and not just a delusion but I am not really sure.
Thoughts?
The translation aspect left aside, storywise I think this is definitely inaccurate.
Let's say truly "anyone" would be fine to show her what love is, then why not the guy that confessed to her? The requirements are the same as with Touko (being loved by that person), heck, it suits her impression from Shoujo manga far better to fall in love with a boy. If she was that desperate for it, she certainly could have at least tried to date him for a while and attempt to fall in love. Yet she didn't want to do that. She never even considered taking him up on that, because she didn't want to do that to him.
Then why is it different with Touko? Does Yuu just not value Touko's feelings, to use her like that? I don't think so. It's clear to me at least that this is a pretext, an excuse to herself, so that she can justify her actions. In chapter 10 she might not have realized her love yet, but she instinctually knew that Touko was the closest person to that dream of hers. Not because she was unconditionally in love with her (mostly because there were conditions), but because Touko is someone that she could grow to love.
I think the fact that Yuu was in denial about her feelings for so long and only came out with them when she was about to burst from how painful it was is more proof than we will ever need to acknowledge her feelings as genuine. The way she now retreated into the aromantic position in chapter 39 is very similar to the sports festival (ironically the other time she had a serious talk with Maki). Back then she denied her growing feelings out of guilt and fear.... Now she denies them out of pain and regret. The fact that she tried to take Akari's example as a way to move on, but then denying that she needs to move on, because her feelings might not even have been real... isn't that exactly why we know that they were? Escapsim after heartbreak.