Did you realize that Calvin Klein, 67, had been dating a man 46 years younger than him? If you didn't, then you'll need to look at this Google Image search (SFW, at least for the first few screens) before understanding why everyone is reporting about how Klein's former boy-toy Nick Gruber was arrested at his Greenwich Village apartment earlier this morning.

According to TMZ, "Law enforcement tells us ... the 22-year-old model—who used to work in gay porn—was busted at his home at 4:58 AM after someone called 911 to report Nick punched a 20-year-old man in the face." Cops saw that the victim was cut in the face and Gruber allegedly resisted arrested by "flailing his arms in the air... Cops say they noticed Nick suspiciously reaching into the front of his pants ... so they conducted a strip search back at the station ... and discovered cocaine on his person." Yes, the male model had blow on his junk.

The Post says that Gruber "allegedly clocked a man he brought to his Greenwich Street penthouse after a get-together." So Gruber and Klein aren't getting back together?

The victim told the Daily News, "It’s really unfortunate. I thought he was a good friend. I’m OK for now, but I don’t know about the future."