Live in the Moment

When Lily's friends leave her by herself in Hogsmeade, and the Marauders give Lily the choice to join them or stay alone by herself, Lily doesn't think twice before agreeing to join the four mischief-makers. She should have thought before answering...or should she have? Romance only because of Mary and Marlene's implied (eye-brows raised) 'suggestion' about James and Lily. ONESHOT!