Yooooooo having lived through this exact (Well similar situation) I have to wholeheartedly disagree. The thing about facebook is that it will keep throwing content at you, especially if people are getting married. So, I had an ex back in college, and he was getting married very quickly, and you would not believe how many damn posts he made. You would not believe how many people wanted to talk hot goss with me about it although I wanted nothing to do with him because it caused such intense pain. Even if you block, even if you mute, you still see stuff about it because you are friends and you are people who have the same circuit--so I had to straight up delete my facebook account.
one of the best decisions I made in my college life was deleting that account. If you allow yourself to stay on facebook when you have a lot of grief and pain over someone who is like having the opposite of those feelings, facebook draws you in, it will make it worse because it is designed to make it so you never stop clicking, it churns it into feelings so bad, and so toxic, and they cannot stop. The way of getting out and the way to move on was to physically remove myself not only from him but also from the internet. It's really good for you to do.
Eventually you do have to meet these people IRL, not gonna lie--you still can't remove yourself completely. but then it's only a few moments of sadness and angst vs if you see them every damn day on social media.
Anyway this isn't really about art, and instead about like...I dunno jealousy when your ex gets married, but who knows, maybe someone else here needs to see that like...it's OK to unfollow and hella block your ex mute your friends, go right ahead and they probably won't even freakin notice or feel bad about it in any way so it's like...no harm done in doing that.