What does it mean when your ex blocks you?

A month ago my ex said he didn’t want to hangout with me anymore because it’s too hard for him to try to date anyone else, he went from texting me every to saying that. It hurt but I accepted it and went about my business and we didn’t talk anymore after that. A week after that I went to Florida and he texted asking where i was going. Some time passed after that and I found hes having sex with a girl and I guess spending a lot of time with her, which kinda hurts because I was the only person he’s ever had sex with until now. I was sad but I didn’t let it bother me too much and I myself started to talk to a boy I met, we haven’t done anything sexual though. Anyways last night I posted the boy I met on my Snapchat story and my ex was like the 5th person to see it and immediately blocked me off of Snapch because of it. When I realized he blocked me I went to Instagram and asked if he hated me or something and he left me on read. Give me advice on what to do because I am still in love with him and I think deep down I always will be. We dated for 2 years and we’ve been broken up for a year on and off still trying to be friends. I don’t want him to think I don’t love him anymore because I think about him everyday. I kinda just want to put everything out there and tell him how I feel one last time, but I also want to use his jealousy to an advantage because it might mean he still likes me or just wants me out of his life completely so he can move on :/ I just can’t not love him