My girlfriend and I are long distance and she knows I have this kink. She doesn't always send me nudes but one night unprompted she sent me one and it was really sexy. I also noticed in it she had shaved (which she rarely ever does) and thought wow she must be really horny. I found out later that she sent the pic to an old fling of hers she told me she was talking to and then put everything together:

She didn't shave and take the pictures for me. She did that cause her convo with the guy got steamy so she cleaned herself up and took a sexy pic to look as good as possible for him. She denied that she did that for him and she just was felt like being a little sexy, but I know her well enough that her reasoning doesn't fit right with how I know she normally is. I think she feels embarrassed since the guy has since stopped talking to her at this point. Either way, now when I see that picture I think about how she was basically showing the guy what she'd give him if he was up for it and it's such an odd feeling that I really enjoy