i think eva and nik being so different can definitely be the driving force of their friendship, with eva keeping nik grounded when she tends to get carried away or float away, and they both have not wanting to be alone in common, so i think they'd click on a solid level. where is eva going to school? nik is 25 and went to cu boulder, they're close enough in age that maybe they met through greek life? either in the same sorority or met randomly at some pledge event.