Question: how to avoid someone from trying to turn Everything into romance setting in the disguise of a friend?

完全心累。

I always feel in debt, when I can't reciprocate feelings.

Also, I feel it is despicable to constantly attempting to overstep the bound when you clearly know where you stand.

Just because you're pretending to ask as a friend so that I can't reject it directly, doesn't mean you can keep doing that.

Know the limit.

And waste no more effort, please.