I (29f) have been in a very rocky relationship with Carl(38m) for a year and a half. The first year he treated me like absolute crap, refused to communicate, ignored me until it was convenient for him, blah blah, blah. We broke up last fall and I asked him to delete any risqué photos or videos of me... We got back together a few weeks later and to my surprise, the content was still on his phone. We were back together so I just ignored it. Dont ask me why i got back together with him or stayed, although he did start treating me as a girlfriend and partner at this time. Well we have been back in a cycle of lovebombing and significant neglect again and I am just really tired of it. I was ready to be done. Calling these pictures and videos risqué content is putting it lightly..... this is life ruining content and I truly dont believe that he is above revenge porn when scorned.. So my plan was to snag his phone from his house while he was cooking dinner one night and say i was going to my house to get something, delete the pics, return the phone without him noticing and then break up with him. Well the evening I planned to do it didn't go as planned and I knew I needed to break up with him while I still had the nerve. I never had a chance to get like 5 mins alone with his phone, but i did have the oportunity to take it. The problem is that I had to leave for night shift 1.5 hours away.. So I snatched his phone and took it with me and figured I would return it in the morning when I was off work.. I honestly only went into his gallery to delete the graphic pictures of myself, deleted our texts, my phone number and was done. I didnt snoop through anything that didn't pertain to me. He had content of me in his general album and hidden album. I deleted only stuff of me from both and then cleared his deleted pictures album. I even left the few nudes from his ex-girlfriend as that was none of my business. Here's where I really am feeling like I'm probably the asshole. He called me from his parents phone about 45 mins after we departed (i acted like nothing was wrong before we left eachother) and told me his phone was missing and that he thinks someone took it from his unlocked truck in my driveway and asked if I could look up footage from my doorbell camera. I don't pay for recording, just live view so I told him that. Carl, his parents and maybe grandparents, too, started looking everywhere for his phone, calling it, etc. Finally 2 hours later, he called me again to say that he definetely thinks someone stole it and that it's nowhere to be found after backtracking everywhere it could be. I then fessed up and told him I had his phone and that I would return it ASAP when I was off work in the morning or that he could come get it from me at work. He ended up coming and getting it from me, he was irate... and i feel he was rightful to feel that way. There's some other details like his mom calling me to tell me that I was very wrong for doing what I did and that she hopes this is a lesson for me... I owned up to my actions and explanined why I did what I did very respectfully to her. And yes ma'am it was a lesson. I haven't talked to anyone in his family since I gave him his phone but I have a really heavy heart today and feel like I may be the asshole for going about the situation the way I did, even though I couldn't see annother way to do it.... So... Am I the asshole?

ETA: These are pictures/videos he took.