How Should She Move Forward After Her Breakup?

was in love with a guy who used to love me too. Little by little, I fell harder for him. Slowly, I started to realize that he was still in touch with his ex and his best friend who liked him. This caused a lot of disputes in our relationship, but I never stopped loving him. He assured me that he wouldn't talk to them again, but every time I asked him to show his phone, he always refused. While checking his following list with another account, I found out that he still followed his ex. He told me, "She came into my life before you," which broke me completely. I tried to talk to him, but he ended our 2-year, 7-month relationship because of this issue. I'm still recovering from this trauma because I loved him with all my heart; he was everything to me. I don't know what the future holds for me, but I do know that you should never entertain your exes.