A Quick Stop in Paradise by Lily Seabrooke

Her boyfriend tried to cheat with the bartender. Now she wants her too.
Ryan Bell is already anxious about her family vacation. Between family drama and arguments over her career change, the last thing she needs is her boyfriend trying to cheat on her with the resort bartender.
Brooklyn Sterling is perfectly content with her life in paradise, working the bar at a high-end resort and drifting from one no-strings fling to another. Attachments aren’t her thing. But an attempted fling goes bad when it turns out he has a girlfriend—and when that girlfriend dumps him, her family takes his side.
Brooklyn’s just trying to do the right thing by stepping up for Ryan and giving her a place to stay. Under no circumstances is she going to take advantage of the beautiful woman sleeping under her roof.
And certainly, certainly under no circumstances will Brooklyn fall for her.