Is Senator Lindsey Graham (R) about to be outed?

Mike Rogers says on his Twitter:

I wonder if Lindsey Graham knows I have pictures of a man who spent the night at his house. pls RT
– 10:57 AM Dec 18th

Just reached lawyer at home. Meeting set for Tues. on releasing pix of man who spent night at Lindsey Graham’s.
– 11:05 AM Dec 18th

Mike Rogers has a blog BlogActive on which he asked recently With SIX members, isn't it time to assign some staff to the Closeted Senators caucus?

He also says "one governor". Could it be Texas Governor Rick Perry?