A sin or an unseen gift

Hello, I just dont know what to feel right now. It all started years ago that I learned that my girlfriend's uncle has a thing for her. You know, that creepy uncle we all have. She told me that he creeps her out and doesnt want anything to do with him and always stays away from him in their reunions. I caught her uncle one day taking pictures of her while she wasnt looking and i just kept it to myself for some unknown reason. My girlfriend is really kind hearted and religious in a way. But she's also pretty and kinda Thicc thats why she gets other guy's attention. My girlfriend recently cheated on me and now we broke up. I didnt do anything to make her mad or did anything to upset her, She just said, "I dont know what to feel anymore." So fast forward to last month. I saw her uncle's social media accountand had to check it out. This was the guy that perved on my ex and apparently he still has a thing for her because i made a dummy account and when i asked if he knew my ex (showed a picture of her) He immediately recognized her and said "Thats ***** my favorite niece" Then i just started asking him why and more deeper stuff like does he like her or what did he think of her. I ended up receiving an answer that shook me. He said she's very gorgeous and would love to have a wife like her. At first i thought nothing of it. Maybe its metaphorical but then I asked if he wanted to see more photos of her. He said "sure, let me see them" And i just showed a normal picture of her but now she's wearing shorts. He then said, "She's still hot as ever" After that I got this hot feeling that made me want to send more... So i did. I asked him what KIND of picture do you want to see from her? He just said "Anything will do" But I insisted that he'd be specific (Because I had lots of photos of my ex) He then asked me why and does he even know me? I just ignored it and just said "im doing you a favor and I have a feeling you wanted to see more" He just sent the LIKE sticker and said "okay, send her wearing a tank top and shorts" I was getting more into in the more it progressed, so i did, I sent about 2 photos of her wearing what he requested and said "Wow! Now can you send her wearing a swimsuit?" This got me thinking, Cause my ex doesnt post like this on her social media, I can get away with the tank top and shorts photos cause she posted it but the swim suit photo? Again she's a very conservative person. But the urge was too strong and I sent 3 revealing photos of my ex in a bikini then he just said compliments. It went about like that for the next hour, Him requesting a picture of my ex posing like this or wearing this, but then I insisted if he wanted to see more. He said "what do you mean?" I then said, "the kind that you never wouldve thought you'll see" He just said go for it then i Sent her in a bra. He exclaimed the words "WOW!? Where did you get this?" May i remind you that this is her uncle. and he's seeing his niece in a bra while in a seductive pose" It felt good making his long time wishes to see my ex in those explicit situations. I mean it really feels good considering this is kind of a revenge. But I feel really guilty because people make mistakes and Now Her uncle wants to know if I have nudes (Which i have) And am Hesitant on sending it. Please give me feedback on what should I do next? :(