When my ex-girlfriend and I started dating, she already had booked a vacation with friends. So after a few weeks of dating she went to Spain for about two weeks. We mailed and talked with each other on WhatsApp every day. During the vacation she went topless a few times, on the beach and in the swimming pool area of the hotel.
On one hand I liked it very much, but it also made me jealous since I'm her boyfriend and I'm not seeing her like this.
She must have sensed this and asked a friend to snap some topless pictures of her. Later she shot some completely nude pictures of herself in the bathroom mirror.
This made me very happy

So I guess it was her idea!