A person can not act happy. It shows if your not. You really need to be happy in life. When was the last time you and your Husband went on a date? A date can be just a walk in the park, out to dinner, just about anywhere. It's a time for a husband & wife to be together without the kids.
If you can't tell him how you feel. I would write him a note, he needs to know. At one point you felt in love, now you either have to get it back, or move on so you can be happy. I know it's hard, my Sisters have been there. Their life didn't end, their children were fine. They became happy, and that's whats important.
I have been married for 25 years next month, we have five children. My Husband is my best friend, I think it's because we always talk. We still go on dates, and I'm sure we always will.
Try to write down the things you want out of life. What makes you happy, and what makes you sad, then read it and take it from there. It's what one of my Sisters did. She said she would have never known how she really felt, if she didn't write it down. She's super happy now, and you can be too.
Good luck in whatever you decide to do.
