Hmm...
Arathil currently has no significant other, and his family is... much-depleted, as well as being not locally based (although that could change in the fairly near future).
He does, however, have a recently re-appeared old friend in the form of his childhood tutor, the elf-maiden Myhnara... at present, there aren't any ideas or appearances of anything going beyond friendship, and Arathil is much occupied with the reconstruction of his recently re-captured estate and preparations for the coming war.