For the past four years Aven Shepard has shared everything with her best friend, Liam . . . except for the secret she knows would ruin their friendship. The one about how she's loved him since the first time they met.

But now everything is about to change.

Back in freshman year—when Aven and her ex-friends Lyla and Quinn were still speaking—the three girls made a pact that they would do the thing that scared them the most before graduation. Even then Aven knew that nothing was scarier than risking her heart.

Now, with the end of high school drawing near and the seniors headed to Florida for a class trip, Aven is determined to fulfill her promise and tell Liam the truth. Even though he already has a girlfriend. Even though Aven's finally met a great guy who likes her back. Even though Liam reciprocating her feelings is as terrifying as him rejecting her. Because no matter what he says, Aven knows that once the truth is out, things will never be the same.