Ok, I feel a little weird asking this on here, but I really need to know, and the people on this site are so darned helpful, so here goes:
I have found myself in a brand new relationship with a Korean girl. By brand new, I mean it's only about two days old. She doesn't speak much English at all, so most communication is in Korean. I'm kind of confused on what politeness level to use in a relationship. With the relationship being so new, we don't know each other that well, but we have... uh... slept together. She's still using the 어/아/여요 endings a lot instead of 반말. With things having gotten this, well, intimate, should I still be using that manner of speech? When do we switch? It's all kind of confusing. She is about 12 years younger than me if that makes any difference.
Thanks for any help