This comes from a post from a UK Sex Doctor blog:
Keep intimate
Even during times of stress, when you're not having sex it's important to stay intimate. Show your love and commitment through hugs, cuddles and getting close. Share the hard times - secrets can breed resentment. Support one another.
Keep it fun
Bring a sense of humour into the bedroom. Play games, explore your fantasies and role-play. Try bondage or sex play. Keep a spirit of adventure.