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: so as many fuck ups this one happened in the past.

anyway, after a peaceful break up with my ex i started dating a new girl a few months after. she and i studied the same major but while i'm already in the last year of college she is at around the middle meaning she is taking courses that i'm done with for good. 

so, as the title says, i lent her my pediatrics book. a book my ex and i used when we were taking that course a few years back, a book where said ex used to write things to me that went from "you are the love of my life" to "i want the d" (this one might be slightly dramatized). 

by this time gf is getting jealous about my relationship with ex (ex and i are doing medical internship in the same hospital and since we broke up peacefully we still hang together while within hospital walls as friends) so when i lend her the book and she finds out those messages (6 months worth of them) she goes bat shit crazy and gives me an ultimatum "stop hanging out with her" which i can't comply with since we are in the same shift rotation (not much you can do about it; the chief resident assigns them at the start of the rotation). 

after that it spiraled out of control and ended badly when i called her my ex's name by mistake.

i still cringe about this fuck up.

TIFU By lending my GF a book.