I teased the buddy of a friend

To continue with my posts about what can happen and what has happened to me at our local lakes, here is another one:

I have a long-time friend who always had a big crush on me. He is a really good friend, but to me he'll always remain just that; I even told him so in the past that he was free to find someone else, but to no avail.
One week, we were at the lake and he took a buddy of his along that I didn't know - but whom I found kind of attractive. I wasn't going to start anything with him out of respect for my friend. Even though we are not together, he can still become kind of jealous - he doesn't say anything but I can feel it in his looks and body language. And that annoyed me quite a bit during the course of the afternoon.
So when it was time to leave, I had to switch from my bikini to my normal clothes and pretended to have a bit of a problem, changing clothes and holding my towel at the same time. So I asked his buddy to hold the towel for me as he was the nearest person. He took and hold the towel tight around me, averting his gaze - but that made my friend (remember just friend not and never boyfriend) look over jealously. Then, When I had slipped out of my bikini top and bottom. I "accidently" dropped my panties, before putting them on. I told his buddy to hold the towel more loose so that I can reach down to pick them back up. As I leaned down, I stretched my naked butt upwards. I took my sweet time and seemingly had trouble fishing for my panties. All the while, I continued talking and at some point he must have looked down and seen my naked butt and pussy, judging from his reaction. I smiled turning my head around and up, asking "what was that?" As I asked him directly, he took another glance and I could see his eyes widening looking again at my best parts, but he didn't look away. I let him look for a bit, wiggled my butt, and gave him a smile. Then In grabbed my panties and stood up turning around. He now could see my bare breasts and his eyes grew wider still. I gave him another smile and a good hug with one hand below his waistline and told him that he could hold the towel more closely again. Then I dressed and watched my friend being quiet but furious at the same time.
Back at that moment, it felt good doing so. Afterwards, though, I was kind of annoyed at myself that I did it to hurt my old friends feelings. I probably shouldn't have done so and I regret it a bit.

Regarding what I was wearing (well nothing for most of this post, but afterwards):
https://www.imagebam.com/view/GA6R0Z