Remus Lupin was sick. His stomach kept lurching and gurgling and doing many other unpleasent things you wouldn't want to know about. In Remus' eyes, it was all Sirius' fault. Because the boys were only eleven and Sirius dared Remus to eat dirt, and Remus was really trying to become James and Sirius' friend, so he ate a handful of the sloppy brown stuff. If they don't like you, Peter confided, they beat the snot out of you, which I found out the first day, but we're friends now, James, Sirius and I, Peter promised. Because Peter seemed pleasent enough, if not a little stuffy and hero worshipping, Remus thought the idea would be wise, because he really needed friends.
In retrospect, it was actually really stupid. He and Sirius and James and Peter would be brothers anyway. It was fate, and no one blocks fate. But vomitting over the side of the cot in the hospital wing was very painful for poor Remus, as he was very fragile and thin. Despite the fact that Remus was there because of him, he was glad when Sirius showed up that night.
"Hello young Remus with the weak stomach," drawled Sirius as he loped in gracefully, already having established himself as dramatic and mischevious in a couple weeks at Hogwarts. Remus couldn't deny even then that Sirius was beautiful. As the dark haired boy sat at the foot of the werewolf's bed, Remus knew they'd be great friends, even if it involved eating more dirt. Because Sirius, with his boyish good looks, brilliant mind and effortless cool, was hard not to like, just like James, even if they thought Remus eating dirt was funny.
Even as Remus barfed up something that probably could've been his spleen, he one arm hugged Sirius and asked, "Friends?" Sirius grinned, answering with a rowdy, "HELL YEAH!" Remus smiled shakily. It was the beginning of the tumultuous and wonderful years for all four boys