overthinking

So recently my boyfriend lost his phone in a downtown area, he was skateboarding with his friend andddd when he told me what went through my mind was… "my booty pics…" I asked if he still had those saved and he said yeah and I'm sitting here thinking "great… now whoever found his phone is gonna see those plus know what I look like because of my selfies he has saved. 🙃🔫 " The next day he tried finding it but no luck, also it's an iPhone 4 and he has a 6 digit passcode on it. He also put it where once it's connected to the Internet it erases all data on it through Find My IPhone. But me being me thinking crazy ways people can access his stuff I keep thinking "yeah okay it's gonna fine." But another half of me is thinking about those technology nerds that can find ways of hacking into a locked iPhone and seeing my face and my ass 🙃 My top fear is someone that might know me or my family finding it and somehow getting it unlocked will see my butt and having family find out… what I really wanna know is does this "Find My iPhone" lock, delete data or whatever is really truly work?? Idk what to do and I'm just so stressed about it… will it be okay or no? 😥 I'm just hardcore hating myself for sending booty pics in the first place.