Should I tel my ex new girlfriend that he still has my nudes?

So recently I got in contact with my ex to wish him a happy holiday. We then happen to catch up on everything. He mentioned that he still has my nudes and uses them. He also say things like I still have a place in his heart. His now girlfriend found out some of his message he's sent me. I didn't know he has a girlfriend until she message me. She asked me about our convo and I told her how he was flirty and didn't tell me he was dating. However I didn't tell her about him still having my nudes. Should I tell her? Or leave it be?