Jayne, Congrats hun! I know love can strike quick. My parents had known each other three weeks before engagement and my wife and I were talking wedding stuff just two weeks after we met. My parents are still together after 30-something years.
As far as the avatar goes, it sounds like Jayne is just saying that the picture is pretty much what she looks like, not that it is her. The way her answer was worded does not seem to say that she is passing this photo off as herself, just that it is very much like her. I may be wrong, but that is my view on the matter.