Listen, friends irl do gain crushes with one another, as friendship can be a gateway to a romantic relationship with one another. That's been around for a very long time.
Taking advantage of someone because they have romantic feelings for you is when it becomes a transaction of affection between another person or doing something that's not in their character. Real friends don't carry any debt that becomes used as a promise.
When people do gain crushes to their friends irl, they hope for that feeling to go away and not confront their feelings, and friends who pick up on these feelings won't bring it up because if they do that relationship becomes redefined as something else other than friendship and more so that they don't seek their friendship but as a suitor looking for love.