I am planning to ask an ex to be friends, bad idea?

Hi guys, I dated this guy for only three months. We met at work, we don’t work together but work in the same building, and we hang out with the same friend group. At the beginning everything was nice and we had a lot of fun together, but after a while, he started showing clear signs of disinterest, taking a long time to respond, even days, and other signs. At the end, I felt disrespected and hurt, and I just ghosted him (I know this is immature behavior, please don’t be hard at me, I am just a human being trying to survive in this world). It has been a month since that, he hasn’t contacted me and neither I. Sometimes we run into each other at work, and he is a bit cold and doesn’t seem to be willing to talk to me, and I also didn’t try. He is glued to watching my Instagram stories though. I don’t think we can ever be together because I didn’t like his communication style and I felt he wasn’t that into me. However, I am starting to notice that I really miss him as a person and I miss having long talks with him and just hang out. I am a bit sad that we don’t even talk anymore, so I am considering having a conversation with him and ask him to be just friends and hang out. I also want to end in good terms with him and not have these bad vibes we have now. However, I am a bit afraid at his response. I mean, imagine I ask him to be friends and I discover that he doesn’t care about me at all, is rude/cold and he doesn’t feel the need to be my friend, that would hurt a bit. Also, I am not sure if it is a good idea to be friends with a guy who didn’t treat me properly / show interest when we were dating. Would that make me look extremely needy? To summarize, is this a terrible idea? Thanks for your time.

I am planning to ask an ex to be friends, bad idea?
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