GF sounds to me like your H is going through the menopause
Seriously though have you read the 'Irritable Male'. Can't remember off the top of my head who it is by and i have put my copy away. Its the equivalent of the male menopause and it certainly answered a few questions for me. Not that I'm going to get to put the answers into action
Me 43 XH 45 M 2.7.88 Divorce 7.10.09 Kids D20,S17 & D15
