Was it best to act like he wasn’t there?

I ran into a guy who ghosted me today? ( I don’t have a lot of dating experience, so please don’t be harsh) but we did date for a bit but an incident happened between us. So we broke up but we still seen each other after the break up. Then one day he took me off his social media. We haven’t spoken since. But today I had to go to a clinic to see a doctor. I seen him there and we both had to wait in the lobby. But the lobby was pretty big so we didn’t have to sit close, thank goodness. For me it was kind of awkward, I haven’t seen him in a long time. But I just acted like he wasn’t there, plus I had to fill out paper work anyway. I thought maybe it was better to pretend I didn’t care. Like show him that it doesn’t bother me or give him the satisfaction that he does bother me. Was it best to act like he wasn’t there? I didn’t look at him or anything. It did hurt that we broke up and everything ended.
Was it best to act like he wasn’t there?
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