Summer, fall, winter, spring

Ashley has been best friends with Wally for as long as she can remember. Always having done everything together, things have changed now that they're both older. Wally's interests have spiraled past just Ashleys and she's being forced to figure out who she is without him. All the while someone new has stepped into her life. A handsome coworker at her new job who makes no small feat of showing his interest.
But then there is Ben. Wally's older brother who's always been just that. Wally's older brother. Nothing more.
But now, as Wally's going further away from her, she sees Ben for what seems to be the first time.