Would you let your pride stop you from reaching out to an ex?

I was ghosted after a two-year relationship where we had started discussing marriage, business plans, and a future together. About a year later, my ex's best friend reached out to me via text. I didn't see it right away and ended up not replying for a few days. Then my ex reached out with a simple "Hey, how are you?"—but there was no explanation for why he ghosted me. I left him on read.

Since then, he hasn't tried to contact me again (no calls or texts) or offered any explanation. However, his friend still texts me quite frequently to check in on me and wants to meet up with me.  His friend tried to ask me about my ex, but I didn’t respond to his question and he hasn’t brought up my ex again.  It seems to me that my ex is using his friend to keep tabs on me and to get me to agree to a meeting where he himself shows up rather than his friend. It feels like he doesn't want to contact me directly and wants to communicate through his friend.

I don’t know, though, I could be totally wrong, but would you let your pride stop you from reaching out to someone if you thought they weren't going to respond? Or is this only the case if you feel that person isn't "worth it"?

EDIT: Thank you all for the feedback and different perspectives! I really appreciate it. Being ghosted like that really took a toll on me mentally. I wanted to find out why I was ghosted and get some sense of closure, but if he cannot even communicate with me directly and has to go through a 3rd party, then I'll never find out the real reason. I've cut off communication with his friend and am trying to move on and not let this continue to affect my self-esteem.