[ Singles & Dating ] Open Question : How can I stop thinking about him and start thinking about me?

I was in a relationship with my ex for almost 6 years and majority of the relationship was amazing. In December he cheated on me and when someone else told me they seen him, he lied his way through it and left me, leaving me heartbroken. A month later he came back begging for another chance and because I still loved him and because of every other great aspect of the relationship we tried again. January and February were good but since March he’s been hurtful, late to things, disinterested in things and also still telling me little white lies. He also (when drunk) at my birthday drinks put his hand on my friends hip and lower back when talking to her. I quietly asked him about it and then he broke up with me in the middle of a bar. We were supposed to go to a lodge together, the next again day he ignored me all day and said he wasn’t going and also broke up with me via text. 3/4 days later with no contact he was begging me to take him back, to meet him in person to fix things. I ignored and blocked but he went to extreme measures to get in touch with me. I met him to tell him that we would never get back together because I’m too hurt and insecure and he broke down, he hasn’t really got anyone apart from 2 friends and he told me that his world is over, he wanted everything with me. Even after everything he has done to me I am still hurting about what I have done to him and that is leave him after he poured his heart out to me. How do I start thinking about myself?

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