Relax buddy - you did fine. Just continue as you have been - but don't keep repeating ILU until she comes up with it.
CMM came out with ILU way too early - I think maybe after a month? - and I was honest that I wasn't there yet. He kept repeating it though and that put a lot of pressure on me - probably to the point that I waited longer than I would have otherwise to respond.
My guess is she'll be saying it to you before you know it. Relax and keep having fun. Don't overthink.
