Why does he always make out as though he’s looking for something or someone else whenever he sees me?

So about 2 years a guy ghosted me. He did it right after I’d sent him a (partial) nude picture (nothing you wouldn’t see at a beach, no face etc) but unfortunately I work in the same building as him, although different departments, so I still run into him. I actually saw him the day after I sent it and he was all naughty grins and solid eye contact so I don’t think the picture was why he ghosted me. Anyway!

He was weird at first, we’d see each other make eye contact and just both stop, staring at each other mutely, until I would get fed-up and walk off. Felt like he wanted to talk to me but wouldn’t and I sure as hell wasn’t going to speak to him first. But after a couple of months of these random encounters I sent him a message to say it was ok I wasn’t going to lose it with him especially not at work, that I didn’t hate him and happy to chat if he ever felt like it. I hoped this would stop his weirdness.

But after that he started giving me patronising “aawwww, isn’t she sweet…” sorts of looks, trying to catch my eye and smiling dumbly.
He still wouldn’t talk to me though.

At that point I gave up and would actively blank him. I would still catch him staring at me, but I just ignored him.

18 months on and now if I ever catch him looking at me, or sometimes if we’re just passing each other he’ll stretch his neck and go on tip toes peering around me as though he’s looking for something or someone else behind me. He does it EVERY time and considering he’s 6’3” and a clear 8 inches taller than me it’s ridiculous.

I just don’t get why he doesn’t just look away and act casual like anyone else would do. I get he’s not interested, neither am I, but why make a big deal of making out he’s looking for someone else?

Why does he always make out as though he’s looking for something or someone else whenever he sees me?
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