As she described it, there were at least 4 problems. 1. Its generally polite to only make advances on unattached people. 2. Going to her home to ask makes it awkward to say no. 3. Not leaving immediately compounded 2. 4. Subsequent behaviour was bad, thus showing bad faith all along.
I'm not saying in this specific instance it wasn't inappropriate.
I'm saying as a general concept, the very phrase "unwanted advance" has lots of implications of sexual misconduct, when it really can just be as simple as a guy asking a girl out, and her saying no. I don't see what's inappropriate there.
