To Fall in Love (2000)

An accountant, who never quite grew out of his awkward teenage years, finds himself with a dating coach – she happens to be his high school crush as well. Thanks to his coach, he gets a pretty woman he has his sights on for some time, but realizes they are incompatible. Meanwhile, his dating lessons with his teenage crush reawaken old feelings. Not realizing the feelings are mutual, he finds himself unable to act on them due to his fear of being rejected by the one he truly loves.