"I'm fine." — said with a short breath, eyes on the middle distance, shoulders that haven't dropped since he walked in.
"Something is heavy in me and I haven't found the words for it yet. I'm not shutting you out — I'm still sorting the wires before I hand them to you."
Many men process emotion internally first and verbally second; naming a feeling before he understands it can feel to him like being asked to read aloud from a book he hasn't finished. "Fine" is often a placeholder, not a wall.
Resist the urge to pry the lid off. Try, "Okay — I'm here whenever it wants to come out," then let the room stay easy. Nine times out of ten, the real sentence arrives an hour later, unprompted, once he trusts he won't be interrogated for it.