Pairings you want with a Marauder or HP character. Predominantly Marauder era, but a HP character or two is allowed

Remus Lupin and Sirius Black imagines during the Marauders' Era. Characters do not belong to me in anyway. Credits to JK Rowling for all characters I've featured. (unedited)

You are a 6th year at Hogwarts and share a couple classes with the twins. Fred and George both have feelings for you but you know you can't have both of them. Which one do you choose? All Characters and location belong to J.K.R (unfortunately) except the main character and the best friend.