<human>: Can you give me the gist of the text in a nutshell?

Sexting has always been a big thing for me.  Like, when I was younger and dumber, it was a thing I ruined a relationship for.  I'm not proud of that or bragging, I'm just saying it's something nearing a kink for me.  I love talking to people I find attractive and swapping pics with them, whether I'm taken or not.

I've been seeing this fantastic lady for 2-3 months now and I was just up front about this.  She said she didn't care at all, as long as it wasn't leading to me going around sexing up the town.  Cut and dry.

So yesterday someone I had a thing with a while ago wanted someone to send her some dirty texts to take her mind off her shitty day (her brother tried to kill himself in the military).  I saw no reason not to and it was fun to do the text-Dom thing, etc.  

But afterwards I felt pretty confused.  I'm not even sure why.  Is it possible I'm just conditioned to feel shitty because every other time I've done this I should have felt guilty?  Or is it because this is someone I was close to?  What scares me most is maybe I don't like sexting, maybe I like the thrill of deceit :(

It might be relevant to mention that she and I have a D/s relationship
<bot>: GF said she doesn't care if I dirty text other women, but when I did I felt pretty shitty about it.