Heroes having redheaded love interests is not a trope. You may be looking for one of the following:

* FieryRedhead: A red-haired character who is strong, HotBlooded, outgoing, usually outspoken, and (if a [[LoveInterests love interest]]) often female.
* HasAType: A character has a specific taste in love interests, which may include liking red hair.
* RedheadsAreRavishing: Having red hair is portrayed as or considered to be attractive.
* SignificantGreenEyedRedhead: Red hair and green eyes used in character designs to distinguish an important, notable character visually.

If a direct wick has led you here, please correct the link so that it points to the corresponding article.
----