Ah, the 7 year itch?!
It really depends what you mean by a rough patch. Are you just not getting on, arguing a lot, no romance left, dwindling sex life, bored?
Of course these are the main ones, and can often be overcome with a little injection of �oomph� (from both sides). If things are grinding you down because of deeper issues then you may have to explore some form of counselling perhaps.
I am not asking you to tell all, merely trying to ascertain the level of roughness you seen your relationship, as advice could vary greatly.
Alternatively you might just be seeking nice love poems and some uplifting humour.....?