Definition: In this task, you are given a Reddit post as a text. Your task is to generate a title for this text. The title should start with "TIFU by", followed by a situation that caused humor. The title should contain 7-12 words, ideally.
Input: Text: today at my local grocery store i was putting up my kart when i saw a cute girl in another car. i was done putting up my kart when i heard her roll down her window and saw hear blow a kiss to me. now i'm a pretty awkward, scrawny, and shy teen so this took me by a huge surprise because i had never had this happen to me, it made me really excited but it threw me off. i smiled and nodded back at her but still walked away. as i got back in my car and my mom drove off i realized the major fuck up i made by not giving her my number. i now will probably never see her again, the one girl whose ever openly flirted with me. i cant stop thinking of that stupid oversight.

TIFU by not responding to a girl showing interest in me