It wasn't really regret you are feeling.
For you, the sentiment is hard to put into words, really. It was your own stupid fault, at least, up to a certain point. In fact, you could very accurately pinpoint that, right down to the very last pixel.
It's kind of like tattooing a lover's name onto your skin. Stupid, but in the heat of the moment, it feels romantic, like you're going to be together forever, and that it's safe to do something like that.
What you weren't counting on was that after their break-up, Mako would be a total dick, and send the message to everyone he had in his contacts.
Right now though, everyone is gaping after you, and every time you have to go to school, you feel like sinking through the floor. No matter what class you go to, pretty much everyone had gotten the pictures, either directly or indirectly from Mako.
Some people stand with you though. Tell you that they thought he was a total dick for sending those pictures to everyone.
Doesn't help you a lot. Sure, the sentiment was nice, but you are also fairly certain that half of the people who have given you their sympathies would be masturbating to those very same pictures later that night.
It are nudes of yourself.
You had let yourself get pressured into sending them, and it was difficult to recall why. At first, you had taken the safe approach, making sure that the angle you chose didn't include your face.
Wasn't enough for Mako, though. He insisted that the pictures you sent would be a million times hotter if you would just put your face on the picture too, making sure they weren't just some pictures from the internet.
And like a fool, you listened to him, and now you are paying the price.
Truth be told, you suspect he was already with that slut from AP Physics when he asked for those pictures, even though you didn't know that at the time. It wasn't the slut you want to vent your rage onto directly, though she certainly was a good contender.
It's mostly yourself that you blame. For being so damn gullible, and let his charm be enough to talk you into doing something this stupid.
-"Hey! Nice tits!" someone yelled, and the only choice you really have is to stubbornly ignore him.
You make your way over to a quiet corner of the school, somewhere you know people aren't going to bother you. A sly remark when someone shared a class with you, staring after you in the hallways, all part of your own stupid mistake.
Realistically, lunch was the only time you could get some peace of mind, in you own little corner on the third floor. Your friends aren't much help either, since they tended to hang out in a busy corner of the school.
-"Hey there," a cautious voice comes from behind you. You look up, and much to your surprise, it was the slut from AP Physics. "You're Korra, right?"
"If you're here to make fun of me, I swear to God, I will beat into the fucking emergency room."
-"I'm not here for that," she calmly replied. "I dumped Mako, thought you should know. If he thinks this is an acceptable way to treat people, I don't want to have anything to do with him."
At this, you're surprised. "You really did that?"
-"Of course. I mean, I don't know you, but I figured you could use a little bit of cheering up, or maybe just company that isn't out to mock you."
You smile at her kindness. "Thank you." You move up a little bit, creating a bit of space for her to sit down in. "Never caught your name."
-"I'm Asami."
I know it's short, but I wrote it as a warning to everyone thinking about sending nudes to others. If you're under 18, even if you do it yourself, sending them is creating and distributing child pornography, which is a felony in virtually every country on earth. If you only send the ones you got out, you're still a felon, not to mention a bastard.
Primarily, I think people shouldn't be sending nudes, but that's just my opinion. However, even disregarding my thoughts on the subject, it is a terrible idea to send nudes that include your face. Doesn't matter if you're a man or a woman, if you think it's romantic to do this, make sure to at least exclude everything from the neck up.