Closure??

The first week of January I reconnected with my first boyfriend of five years. Both 23 years old. We never really got to properly end things the first time around and spent 4 years chasing each other. We finally had the opportunity to make a relationship work and he pretty much ghosted me and would only reach out at night to “hang out”. I quickly understood that the type of relationships we wanted out of each other were completely different so I stopped making conversation (through text) with him even though he’d make an effort at night. It’s been four days now and I haven’t heard anything from him at all. I realize that a relationship with him is not going to happen and that really makes me upset because I imagined us having a happy ending one day.

My dilemma is that I have so much I want to get off my chest to tie up the loose end and never look back, but is it worth it to express myself to him or should I just eat my feelings and back off since he most likely won’t give two shits about how I feel anyway?