I’m not good at reading people, but I think that sounds like a reasonable approach.
assitant
If I were you, I’d give it some time.  It sounds like he wants to be friends, but he just can’t figure out how to bring that up.  I think it’s totally normal that it’s been this long, if it’s
assistant
Why did he stop talking to me
user
I don’t have context for your question, can you tell me what happened?
assistant
We dated then we were friends now we don't  talk
user
You started talking about something that’s clearly painful.  What happened?
assistant
He dumped me and friend zoned me. now he stopped talking altogether
user
And how long has that been going on?
assistant
The entire thing has been going on for 18 months
user
And you’re wondering if it’s time to just move on?
assistant
I have moved on. if he wants to talk to me again idk if I should ghost him
user