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: this is not a throwaway, i've just never had a reason to join reddit instead of lurking about. now i do. as fuck ups go, this one's a long term disaster that just blew up in my face on friday and finished up today.

so, background. i live with my father. he and my mother have been separated for many years, not that they married in the first place. he dates. in the six years i've been in his house, he's had at least three girlfriends, including the current one. with the past two, i was friendly and sociable. i made an effort to get along with them. to...connect, you know? i was more or less successful with the first, and the second became my good friend.

but therein lies the problem. my father broke up with both of them. i wasn't mad about it. breakups happen. does not, however, mean that not being able to see them anymore (i look and sound a hell of a lot like him, so...yeah) didn't hurt like a son of a bitch. so, girlfriend number three i went in with shields up, because fuck all of that shit.

of course, as i have recently learned to my dismay, me with shields up is exactly the same as a massively rude and unsociable asshole. i may have permanently alienated this poor woman who did nothing wrong. i tried to apologize, but she was pissed, and remains so. to say nothing of the conversation i'm know i'm going to have with my father when he returns from his trip. and it's very far away from how i wanted this to go.

if i'd been up front from the start it might have gone better. but...how does one both realize that one feels that way and know how to say it politely enough that you're not the asshole? my talents have limits.

TIFU by trying to protect my tender heart.