I don't know how to feel about this TwT

So, sorry for the gossip, but a couple days ago my now ex boyfriend broke up with me (we had a virtual relation ship fyi) at two in the fucking morning, and I need to know if I am in the wrong, so here is the story:

We had been dating for about 11 months and were a really good couple until this one girl came in and basically wedged herself into our friend group. Lets call her Mel. It was fine for about two months before she really became close to me and my boyfriend. Mind you, she has a lot of mental problems and black mails us if she doesn't get her way by saying she will SH herself. But otherwise she was a good friend. It started whenever she told me that she had a crush on my boyfriend but said she wasn't going to do anything once she had found out he was dating me. I was surprised by the audacity this girl had by telling me this. She ended up attaching herself to my boyfriend and expected him to fix all her problems since her boyfriend (which was my boyfriends friend) wasn't giving her the attention she needed. So months go by like this and I don't know if my body already knew or something, or I was jealous, but it was getting to the point where he was constantly with her. I thought that he was slowly losing interests in me and was starting to like her more. Whenever he was online and she was online I would request to join them both but they never accepted so I would end up joining him through the oculus app, and even when I got there he seemed like he didn't want anything to do with me so I would end up not talking to him or even texting him, and turned to my friends for comfort and help. This girl Mel would always post pictures on her profile about her and my boyfriend being together and cuddling, as well as he did this too occasionally. With this one of my friends made up a devious plan to get back at him to see if he actually cared or not, so I ended up posting a picture of me and one of my friends cuddling. He instantly started blowing me and my friends up with invites and I decided not to accept. One of my friends join him to talk to him and he was pissed. He joined us where we were and told me we had to talk. So, we went into a private room to talk. He asked me who was in my picture and I said my friend. He didn't believe me. I said that I had been hanging out with friends for the past two weeks, he quickly intervened and said that I had been hanging out with other guys. Mind this, I have friends that I had been hanging out with all week to vouch for me. I stood on my truths and said that I wasn't lying before bringing up how I thought that he was losing interest in me and was starting to like Mel more. HE ENDED UP PAUSING BEFORE SAYING NO. He ended up saying that us in general wasn't working out and that we could still be friends. I was on the verge of having a melt down before quickly leaving to go back to my friends. They ended up calming me down and told me at least I was free from him and I didn't have to endure that treatment again. It made me feel better. This wasn't the end of it though. Mel ended up putting her status to pleasant and posted a picture of her and him cuddling. I knew it and instantly knew that I had to be better than that and just live it up and be the best I could be and embraced it, celebrating with my friends and sharing secrets. 

The conclusion is, am I in the wrong in this situation? T_T