My first vacation with my spouse made me want to be single.
Why did you want to be single again?
I felt lonely and sad without my friends.
I can understand missing friends, but you really should want to go on a vacation with your spouse. If you don't want to be alone with them, you should consider separating.
I still want to stay with my spouse. I just wish my friends went with us.
You can't always invite your friends. It's best to spend time with your spouse alone. It sounds like you're too dependent on your friends.