Rosie and Alex have been best friends since they were 5, so they couldn't possibly be right for one another...or could they? When it comes to love, life and making the right choices, these two are their own worst enemies. One awkward turn at 18, one missed opportunity...and life sends them hurling in different directions. But somehow, across time, space and different continents, the tie that binds them cannot be undone - despite unwanted pregnancies, disastrous love affairs, marriage, infidelity and divorce. Will they find their way back to one another, or will it be too late?