It's incredibly hard to maintain a platonic friendship without any romantic advances because there's no tangible line of specifying you're interested in someone or not. By default just being nice to someone ends up with you on the romance path, unless you're specifically aware of which dialogue options trigger things (Even then it surmounts to you having to turn them down at some point)
This sounds a lot like a watered down version of romance in real life. There’s even a song by a German pop band about how easy it is to step over that line unintentionally with someone you’ve known for all your life.
Adding nuance to that would make it even harder to understand.
To the second point: I also misunderstood some dialogue options (what my character meant with them), and getting a better indication of that may be nice, but I don’t think you should be able to control how the other character interprets what you said. Though it may be useful to show when there is disagreement on the interpretation (e.g. your character acting surprised when the reaction does not match the intention).
