it's a common thing for these thoughts to seem to apear out of the blue and I'd imagine even more so for men (us women tend to want to share our thoughts, feelings while men tend to want to work it out on their own)
I didn't have an a (my h did) but for well over a year before my h dropped the bomb I asked him if he was happy, if this was how he thought things should be etc and never once did he claim to be anything but satisfied until poof he suddenly hadn't been happy for years.
Things have a way of working themselves out. Have patience.
