Sorry to disappoint Goblin, but Tank is a bro not a creeper. (unlike the guy from "I Can't Believe Yours Truly Turn Into a Girl" by the same author)
Actually I kind of like how the more Tank treats Goblin with humanity and decency like they're still bros, the more Goblin becomes a maiden at heart. Like that's almost exactly what a lot of women want from men in the first place. (don't @ me self-described "nice guys")