I don't feel rejected. I was rejected a long time ago and I've had lots of time to deal with that. I think it highlighted how lonely I've been feeling. But it wasn't me spinning with images of he's doing/saying to her in the same way that I use to feel when this first happened and I would imagine him finding someone.
With lockdown easing (and him potentially flying a full roster in July) and him wanting to continue having the children 50% of the time, he needed to find a way that he could merge his non family life with his family life. His job and the time he plans on spending with the children was just not conducive to a 'hidden' relationship. I don't know if the pressure came from her, or it was a decision he reached on his own, but either way, it would not have been an easy one for him to make. Even if he has long given up on us reconciling he loves the kids and would not want to hurt them.
My H is not one for catting around. Maybe a little when we first separated because he was lost and lonely, but he is a family man. He is someone who thinks he wants to be out with his mates drinking/socialising with no responsibilities, but actually, what he wants is a home and a family. But you're right, on the whole, pilots are a weird lot.