<human>: Give me the gist of the text in a nutshell

I've been dating my boyfriend for 4 years, lived together for 2. When I first met my boyfriend, I had just gotten out of a very serious and heartbreaking relationship only a year earlier. Which seems like a long time. But I loved my ex and felt like he was the one who got away. We broke up due to long distance issues. Before I even started dating my current boyfriend, I told him the entire history with my ex. And that I was still a little raw but wanted to date casually and wanted to take it a step at a time. For the first 2 years of our relationship, there was no issues. I fell in love with him and felt like I had moved on completely, ready to solidify my current relationship. We moved in together. Things were great. However, a few months ago my ex texted me from a new number. I blocked his original. I did not respond. I literally took my cell phone and handed it to my boyfriend. I told him who it was and that I didn't reply. At first, he accused me of deleting the texts individually (iPhone). I swore I didn't. He believed me. But it's gone downhill since. He constantly asks who I'm talking to. He has recorded videos of me in the room to see if I do talk to him while he's at work. A few weeks ago, he walked in on me changing. He asked why I changed my underwear, why I was using the mirror (it's moveable), and if I was sending pictures (as we send them to each other sometimes). I love him but I don't know if I can do this. I'm 3000 miles away from my family and feel cornered. He has right to be suspicious as I did have extreme feelings for my ex. But still. Is this overboard? All of these actions HAVE made me contemplate my ex. Just for the sole fact that it's weird to me. I told him he was being controlling and he doesn't agree. Help?
<bot>: My boyfriend is paranoid over my past feelings for my ex. He's crossing the line. Am I wrong to let him or am I wrong to feel like he's being controlling?