it reads as if he wants to have a last family meal before she leaves, period. Not everything he does will have a deeper meaning behind it, chances are, as you said, all he's focusing on now is work since that's what men do when lonely or depressed, busy themselves silly.
He's been gone a few weeks, not enough time to expect much, he's getting used to his new sitch. In time he might open up a bit more, in time.
Keep GAL and detaching and working on yourself.
Be not afraid...I will repay you for the years the locusts have eaten Joel2
30something 2kids survivor of S, MLC, A, D I have peace in my heart, at last.