I also vote for bard, melee capable, trap capable(if you build for it), can use song, displacement, and haste makes bard strong buddy of barb.
Check out Diva's guide for reference.
You should be able to find build which suits you well
Also as others already noted, you and your friend can always get hireling to take care of healing.
It takes sometime to keep them alive, but once you get used to it, they could be useful than player controlled cleric/FvS.![]()