Just posted a long (from me?-hard to believe, I know!!!) reply on NC re this...but just to add to what Kent said above...
It is pretty easy to sense when something is 'not right', but be careful and go slow before trying to fix whatever you think it is-and make sure it needs fixing at all. I know you know all this, and have been at it for a while (you old-timer you!!).
In my own experience, a few times when I have felt that something's not been right b/t H and I (post A and during rebuilding), and I have been way off. At least that's what H tells me, and I have to believe him (180 for me). He, like your H ALTL, is not the typical alien. My h tends to be introverted....when I think he's thinking or feeling something-I have to stop myself from assuming, and I ask-if he says 'nothing' I drop it (another big 180 for me).
At any rate, once again, let me say I know how you feel....for what ever it's worth!
L p.s. not to contradict myself or anything, but pay close attention to your 'gut'...mine has unfortunately proven to be right 99.9999% of the time.....