How to say sorry to a girl.?

[Eduard]

I have started to talk to this girl and we started to go on snapchat. we are good friends and we talk to each other a lot (like 2 or 3 weeks) but now she told me she just want us to stop talking because she does not want to make her bf upset i told her that she looks nice but i don't want to make them break up.She did not unfriend me on Facebook and on snapchat but she wants us to stop talking. I want to say sorry if i made them argue and that i just wanted to talk to her normally and that i hope she forgives me and maybe we can talk again.We both are in the same age group 13-15 ( i am younger) and i don't want it to sound romantic or something because she might think that i am trying to get her. i will send her a text but i can't send her flowers or whatever so i would just like text.
sorry about the punctuation in the question...

[Been There]

How do you say you are sorry?
With actions.
Words are cheap and often dishonest .. but actions are honest.

If you are sorry, then you will respect her wishes and not talk with her. It really IS that simple.

She has told you she doesn't want to talk. Nor normally, and not any other way.
You either respect her wishes or you don't.
Do NOT send her a text. Pay attention. No, no, no texting.
The door has been closed, and locked. Do not stand there and pound on it, hollering for her to open it. You only look selfish, disrespectful, and foolish if you do so.