I'm going to link the post about White Flag being a stalker song because I want to mention the influences of framing etc (which I have done now so...)
In youtube comments there are a smattering of 'stalker' comments -- but then people often feel freer to comment where they know their opinion will be agreed with.
Still, the number of people who hear the lyrics as being a stalker is pretty... high.
[including the idea that shelf after shelf of framed photos of one person is less stalkery than the more spontaneous 'stalker wall' -- which demonstrates that it's hard to create a creepiness to compete equally with an accepted trope]
And then we get to the additional 'reader' reactions -- the baggage starts being unpacked.
This is something you can see quite a bit with internet reviewers -- the blogger posts that a book has this or that evil content, and a bunch of people agree even when the evidence presented doesn't support the claim.
[some day I'd actually love to do the full on experiments just because it's kind of fascinating]
To cut a lot of wordage short -- if you are writing a book about unrequited love, or non-traditional relationships, or relationships with non-fictionalised people... you will make the folks with baggage yell. No matter if that's how real people sometimes (or often) feel.
I've seen it in crit groups -- where I discovered (with stories not my own) that some people (generally men) can be incredibly wedded to stereotyped romances (girl meets boy and falls in love but doesn't then carry on with other boy just because original boy is not available -- aka extreme monogamy). In film reviews -- where I remember Ghost causing much shock and horror because how would the poor widow be able to have a full and satisfying life knowing her dead husband was in heaven... (???)
Generally I'm the kind of writer who tries to direct the reader... careful word-choice and the tricks of making people think what you want them to... so it'd be great to get to the end of this little trip with a solution. But there are 'readers' who will start with the plain lyrics and still go straight to stalker -- or are just uncomfortable with unrequited love as a concept. This cannot be fixed by word choice, or framing, or explanation.
There will always be some people who do not get what you're saying -- or get what you're saying and do not like what they hear. People believe differently. People carry different baggage.
Check that you're saying what you mean and mean what you say -- but don't try to please everyone or you'll say nothing at all. (Not even 'I love you' or 'I like this')