Between Us by Emma Tharp

One week of pure bliss a year. That’s the commitment we made.
Three years.
For three solid years, we have been meeting up for one glorious week.
The rules are simple:
We have seven days to love with abandon.
Seven days to live without regret.
Six nights to spend together.
Only now, someone wants to change the rules.
And someone wants to see where this could go.
Neither one of us wants to lose what is between us.