well, if we shared interests and had lively conversation, then yeah. supporting someone who cares about you and who you care about is something i would personally do.
but if someone did NOTHING but vent to me, it would get heavy and draining, as much as id love to help.
so short answer, yes, if we were genuine friends, then totally. if used as someone to vent at and nothing else (which i have been used for), then in the end we wouldnt really be actual friends.