That's hard LR. I wither if I don't get enough time with partners. As do my relationships. It's painful to imagine going for months without meaningful interaction. (Glad to hear he is keeping his agreements with the kids. That's hopeful.) With Maca gone a lot, you must feel alone. I am so sorry. That sucks.
Sounds like something is going on with GG. No idea what - he may not consciously know - but something about that job, about being needed and on call all the time ties into something in his psyche.
Now that he has noticed a difference with you, maybe he will be able to talk about what is going on with him. I hope so.