Gough Talks Romantic Clois in Season 6

Al Gough discusses Clark burgeoning feelings in "Green Arrow Targets Smallville" by Damian J Holbrook @ TV Guide :

In addition to this vigilantism, Clark is also keeping a close eye on Oliver's budding romance with Lois Lane. "The issues Clark had with [hiding his identity from] Lana come up again because obviously, he doesn't want to see Lois get hurt," says Gough, adding that this will also spark Clark to acknowledge "feelings for Lois that he didn't realize he had."

Clark will probably have to wait until he's ready to break out the cape and tights for that to go anywhere, however. "We've established that [Lois] has a thing for young superheroes," Gough says. "First Arthur Curry, then Oliver Queen and ultimately Clark Kent. She definitely gets around the Justice League!."

Which should make for quite a season now that Gough is bringing back Aquaman, Cyborg, and the Flash for the launch of Green Arrow's junior Justice League in January. This won't just affect hero-groupie Lois, but also reluctant crusader Clark, who has more than a few issues with Oliver's methods