I don't think that's the case. Again, I think if she valued dating more so than you, you wouldn't be in this position, so to speak. She's still with you under the logical assumption that she does indeed love you. Try to take some comfort and security in that.

It does seem like you do quite a bit for her, so I certainly don't think she's in much position to be envying your friend all that much. But, if she does actually miss the excitement of dating (which don't get me wrong, I don't think she was dropping a hint...I just tend to cover all bases ), you two can still "date" and be engaged, you know. Movies, dinner...things like that. But again, I don't think she was trying to tell you something in that...I think she was just conveying excitement, is all.