Any advice is much appreciated!

My bf and I started dating in may 2019-September 2019. While we were together, I practically had a whole other virtual relationship with someone from a different state, who I only met once in person. I cheated by having this other relationship. Afterwards my bf and I ended up breaking up for other reasons. I never told him about the cheating. We lost touch. In December 2019 we decided to get back together and I still didn’t tell him about my infidelity because I knew it was something I wouldn’t ever do again. I regretted it so much and I didn’t want to put it upon him if I knew I wouldn’t do it again. We have been together for a year now and in January of 2021. He found out about the infidelity and has been giving me silent treatment since. He hasn’t broken up with me, blocked me on social media, but he just isn’t speaking to me. He always had a feeling I had cheated and gave me multiple chances to come clean but I didn’t. I thought I was protecting our relationship. I’m not sure what to do. I’ve asked him straight up what he wants but no reply. I text him every couple days so he knows I’m still trying. But I’m not sure what else to do. It’s been 7 weeks now. I’m such a horrible person for this. Ugh.