We had a "dry spell" but it was for a significant reason. It was after my daughter was born, so I thought it was because of that (we've all been told it can take "time" to get back into the groove). But I was actually sick and had undiagnosed celiac disease and adrenal exhaustion. So, after we found that out and I changed my diet (CD means you can't eat gluten) then I started to feel better. Once I felt better, my libido came back with a vengeance.
During the "dry spell" though, my husband just knew that I would want to again, however long it may take.
We were still intimate and I wanted to, it was just like... I couldn't. It was as if a firecracker started to burn but then went out like a light. I still wanted to please him though (hand jobs, etc).
I think communication is KEY!