Say you have a Stalker with a Crush
. He relentlessly pursues his love interest, watching her as she sleeps, resorting to superfluous and often very disturbing lengths to protect her if he feels the need. Everything you need for a Dogged Nice Guy
Instead of outright rejecting this guy's advances on the first go, the object of these advances isn't irritated. She's completely dazzled and views them as romantic, completely overlooking the stalkerish aspects of it. This can come off as very, very
unnerving to readers and audiences, although some find it particularly arousing.
See also Rape Is Love