u/Fair-Gap-1930

This guy and I were together for almost 2 years. In this time we broke up twice. One was me breaking up with him cause he was on a long term trip and it just wasn’t working. The next day he met this girl who made a whole new instagram page about how in love she was with him and would film them out n about. When he came back we got back together. We are now split and he’s lived in a different country for a year and 6 months. I have had 2 dreams in the last week. One where he moves on and becomes in love with her and they do all the things he wouldn’t do for me and he’s so happy. One where it’s our first date and I know about everything to come and he’s clueless but she pops up in the dream and I lash out. Both times I wake up covered in sweat and I’m sobbing. How do I make the dreams stop. Is it reasonable for me to block him on everything so he can’t reach out anymore? Please help:(