When this happens, I know it’s time to take a break.
A relationship is meant to be fluid. Sometimes you can’t get enough of each other, you cling to each other like a vine to a trellis (oh my darling, never, ever leave me!). Other times, you are too easily irritated by each other (Writer: You’ve too many adverbs. Writing: And you’re breathing down my neck!)
Sometimes you just need space. Go water the garden. Let the computer/notebook bask in silence for awhile. Then come back and see each other with refreshed eyes. Maybe that will help you hold hands again.
Sometimes you just need a break.