That's basically how it is for my guy friends too. I'd have no problem getting a massage from one of my close guy friends (foot is kinda weird for me and neck is kinda pushing it, but back and head massage would be fine(head massage is fine cause I just fucking love head massages, I'd let a hobo give me one if they wanted to)). Suggestive talking and touching is all in good fun really. Especially if we're playing gay chicken. Lol. I've slept in the same room as them, on the floor or in an actual bed, no biggie. As long as there is at least some space and of course spooning does not occur, lol.
I'm pretty open when saying other guys are attractive or not too, so maybe that has something to do with it? Just being comfortable with your sexuality and not afraid of expressing it. I see no reason why guys can't tell when other guys are attractive or not. Girls do it?