What's smth you feel most guilty about doing in a relationship? Current or past relationship.

I did a halloween prank that scared the living shit out of her and left her sobbing and shaking. I'm ashamed to admit how much thought and planning went into it.
- Well you can't say all that without saying what the prank was!
  
  I got one friend of mine and locked him in my bathroom, meanwhile I hid in my living room. Once she got back home and went into the room, I slammed the door to our room and locked it so she was trapped inside. She was freaking out that the door was suddenly locked and teying to open it.
  I then text my friend to start banging on the bathroom door (the bathroom is connected to the bedroom). She hadnt even tried going there and was now trying to get out even more desperately. She had luckily also left her phone in the kitchen. At this point my friend starts playing creepy sounds off of the speaker I'd set inside. I then unlock our door (didnt open it) and go stand outside our apartment door. (Me and my friend were both wearing clown outfits).
  My friend then opens the bathroom door and walks out. She freaks out and tries to escape the room again and this time the door is unlocked so she manages to get outwhile my friend is following her. She tries to escape the apartment and there I am stamding in the same outfit right outside the door.
  She fell down to the floor as if she'd melted, i genuinely thought she'd fainted. In the 5-10 minutes of this prank I heard more unique noises come out of a human then I have in my entire life. Just ended the prank there ofc.
  The neighbours did come out but no issues there, they're cool people.
- Aww, poor gal. Hmm... I guess my biggest relationship regret is moving away. Even if it was necessary, I won't not miss those I've been close with.
  
  That's tough. Losing a lot of people at once. Hope you got good people around you now.
- Its the Aristocrats

Staying with her even though she was abusive. Having kids with her. Then finally getting up the courage to get myself out but not being able to take the kids with me.

I just ghosted him. He was really into me. I should have made up something at least. I think about it a lot and it was like 15 years ago.
So, if you lived in Phoenix around 2005, played piano, had a blind roommate who played guitar, and looked like Trent Reznor in the 90s… I’m very sorry.
- Hey serial ghoster here, so no judgement.
  
  I have judgment. But at least one of you is sorry.

A girl I was seeing asked me what I liked about her and I drew a complete blank. There was plenty to like about her, but when put on the spot I couldn't think of a single thing to say. I don't blame her for leaving me not too long after that.
- Eyes, hair and smile, say that to anyone ever. Life hack.
  If non physical, you make me happy, you're kind, I like the way you think.

Not being clear that the relationship was over. We both just kind of let it fizzle out.
It wasn’t fair to either of us and I wish I had spoken out instead of wasting months of our lives on something that wasn’t meant to be.

Sometimes I get a philly cheesesteak by myself and don't tell them or buy them one.

Early into our relationship I cheated with someone who was just trying to get my money. A year and a half later we’re engaged and she’s just incredible
- Wait so she stayed after you cheated or the person you cheated on with is incredible.
  
  The gf I had at the beginning stayed. No way I would have carried anything serious out with the other one lmao