Venting/seeking other opinions or even help.

It has been 4 months since I last talked to her. I was the one who ended things in June but we stayed very close up until July. She thought we still had a chance at being together but I had told her I don’t think it’s right to get back together because we constantly argued. After I told her that, she immediately found a guy a lot faster than I thought she would, it crushed me because that’s when I realized how much I loved her. She found a guy who has the same name as me and he sounds 100x better than me. When I first found out it put me in a dark place I got very depressed and suicidal. Me and her went out to eat one night to discuss things and when she told me what he’s like it made me feel worse, I was tempted to tell her about my depression and suicidal tendencies. When we went out to eat I told her I think I may be done with the dating life for good .I knew telling her about the suicidal thoughts wasn’t a great idea but I did it anyway out of the pressure. She told me I needed to talk to my family since I am so close to them. But after I explained the whole situation to my friends they told me she sounded super manipulative and that gave me the courage to cut contact with her. Once I did in a respectful manner she ended up calling me and was going crazy telling me I’m insane, that I needed to seek help, that the other day I wanted to stay friends and begged her and now I changed my mind. She said it would be the last time we spoke to each other after I was trying to fix things with her during the convo. I haven’t talked to her since but I hangout with a close friend that has her on social media and we talk about both of our problems. I tend to cry about her often and can’t seem to get away from my thoughts about her. I’m struggling a lot right now.