The right person is the one who makes you feel secure.
In this adaptation of the French play Cyrano De Bergerac, Steve Martin plays C.D. - a witty and charismatic fire chief with amazing acrobatic skills - who has a major crush on the beautiful and intelligent Roxanne. However, C.D. is blessed with a gigantic nose and it causes him to have self-esteem issues. C.D. and Roxanne have a brotherly/sisterly friendship. Meanwhile, Roxanne has the butterflies for the town's hunk, Chris. Chris is a firefighter in C.D.'s department and he also has the feels for Roxanne. However, Chris turns into a mumbling idiot in the presence of Roxanne, prompting him to enlist C.D.'s help to woo the woman of his dreams. Roxanne is a woman of many talents and wants a man who can hold deep, meaningful conversations, mixed with a poetic flair. Chris has none of those skills.
Anyways, what happens is that Chris's anxiety becomes too much and he eventually falls for another woman because she is easier to talk to. In the end, it is C.D. who is meant for Roxanne.
The point is that having too much butterflies for someone can be a red flag if it paralyzes you from being your true self.