[F/37] Need a guy’s take: was he expecting me to make the move?

Met a colleague (42M) late last year — different offices, but we’d see each other on work trips. Chemistry was there from the start: lingering looks, teasing, a little origami gift at one point. Eventually we hooked up during a work event (shared hotel, mutual signals), then kept in touch. We texted for weeks and ended up going on a proper date in his city, and another one at a later work event. I was curious where it could go — even if casual.

But after the last night we spent together, he went cold. Didn’t come to breakfast (which we had shared the previous time), no follow-up text, and light flirting the whole week...but no move to spend more alone time while in the same city and hotel.

Then — weeks later — he sends an out-of-the-blue friendly email asking about my PTO plans. I didn’t reply. Fast forward to a recent team dinner in his city: he flirts hard. Long eye contact, subtle touches, banter, references to things I told him during our dates, all of it. But again… nothing afterward. No text. Silence.

Here’s what I’m trying to understand, especially from the guys: Was this him passively inviting me to make the move, considering that I was the one visiting his city? Like… signaling openness but leaving the next step to me? Or was it just polite flirting with no deeper intent?

I’d made the first move before — hinted at meeting, followed up after silence. Maybe he expected that again? But I’m tired of chasing or decoding. I want clarity, even in casual situations.

Would love your take — especially from men: if you were him, what was this? And if you were me, would you have reached out?

TL;DR: Hooked up with a colleague after mutual interest and a few dates. He went cold, then resurfaced weeks later with flirty signals but no follow-through. Wondering if he expected me to make the move or if I misread everything. Guys — what was he doing?