remus is one of your friends, you met in first year, your both gryffindors and 16

your not as close as the marauders are with him so you dont know hes a werewolf

You were on a walk on a full moon past curfew, just walking through the forest by yourself when you accidentally bumped into remus whos in his werewolf form, sirius, james and peter were all hiding in their animal forms making sure remus doesnt maul anyone