If you were in the habit of doing this often and your gf gets an unsolicited Snap in the middle of the day then she should’ve realised there was a 50% chance this was a NSFW content Snap. So she bears some responsibility for her friend seeing it. So don’t sweat it. It’s happened.

And I realise this is going to make me old man yells at cloud, and I also appreciate its part of modern ‘courtship’ these days, but sending explicit pictures of yourself in a relationship that in all likelihood won’t last is not necessarily the best idea. So maybe tone down the frequency of this activity.