Yeah, that scene in the show bugged me too -- in the books, while she's understandably terrified, he, uh, definitely does a lot more of the foreplay until she's more into it (though like said above, he would've gone ahead anyway either way I'm sure). I remember only because when I was reading I was really worried I was in for a scene where a 13 year old is brutally raped, and I was actually surprised that it's not how things played out, and that Drogo was shown not to be as brutal, in this regard, as the men who were just sorta bending women over at the wedding (though that said, I don't need to read another sex scene written by GRRM for the rest of my liiiife).