So while I was reading "Whatever Happened to Rip Hunter, Time Master?" just now, I came upon this panel.
Rip and the team have travelled back to their college days, pursuing a rival who wants to stop them from ever building their time machine in the first place. (A paradox, a paradox, a most ingenious paradox...) This is from DC Comics Presents issue 37, by the way, cover dated September, 1981. So...did a lot of college roommates share a bed in 1981? I mean, this isn't Abraham Lincoln time, this is post-Stonewall and everything. I shared a bed with one of my college roommates, sure. But we were having sex.
It's nice that Rip is so secure in his sexuality that he's comfortable pointing this out to his girlfriend. Well, not so much "nice" as "passive-aggressive".