The Sentinel fen has an occasional bout of maturity, but usually it's just angst.

Also, I belive Shalott wrote an SGA one... ah, here: A Beautiful Lifetime Event (http://www.intimations.org/fanfic/stargate/lifetime_event.html)

I agree though, I like interweaving love-lines and stories. I think that one of the reasons they're difficult to find is that they also require plots of a plot nature, like adventures