It might be love (marauders)

'My brain goes mental. She actually said yes. She said ok! Lily Evans is coming to Hogsmeade with me!!! I am ecstatic. I grin at her. Properly grin like I mean it. And before I know it she's grinning back. I don't know what to do. I want to kiss her but I know that would ruin everything. We're only going 'as friends'...