Ha! You are now starting to see the key difference between the books and the show, subtlety. The show spells things out VERY explicitly, such as THIS CHARACTER IS GAY or this is the person responsible for X. The books on the other hand force you to pay attention to draw connections. It is entirely possible to read all the books thus far and never realize that Renly and Loras are gay. Unlike the show their relationship isn't common knowledge and known only to a few, thus because they aren't POV characters you have to read between the lines to understand the nature of their relationship.
The biggest one comes from Stannis himself who is the one that quips "in your bed she's like to die that way," referring to Magaery's maiden status. There's also that line by Loras to Tyrion himself about why he joined the Kingsguard at such a young age when he could be about prowling and he quips something about how "when the sun has set, no candle can replace it." Obviously, he's referring to the fact that Renly is dead and no one else can ever replace him. Again, all very subtle.
If you ever read the Dunk and Egg novels the third novellas includes a gay character and yet I had no idea until I read it for like the third time. Then all of a sudden I was like "how the hell did I miss that?" It's why I love the books, so much stuff is hidden beneath the lines.