Once you've relit the fire, whatever you do, don't let it go out again!
Keep your passions in flame by refusing to settle into a routine, as it's this that leads to a feeling of monotony.
"The solution to not falling back into an old routine is very simple," says Ali. "Don’t have a routine in the first place."
"Keeping things fresh and exciting is not something you do once in a while, it’s the way things should be always. But, it is only a part time job - when you’re not surprising your partner they should be surprising you."
So let your imagination roam and keep the creative juices flowing; we're sure you can come up with a few novel ideas to ward off relationship boredom...