I guess the real issue here is that I read things from people that sacrifice writing in character because it's fiction and they'll write no condoms because they like it better that way.

That's the real problem, and it's more than just condoms (which they totally both would use for full-on sex, IMO). It's the attitude of "I want them to do this, so I'm going to make them do it even if it's not in character and with no explanation, because it's fiction, so who cares?"

I care! If you want to write Danny strangling a kitten, then you'd better have a really great reason for it, dammit! (Not that anyone has written Danny strangling a kitten, that I know of, but it is definitely out of character...)