Hello Sarah:

Here's an idea you may consider. See if you can find out what his femme screename is. Communicate with him there. At the right time, reveal yourself as the woman he now loves but is afraid to reveal herself to. There are risks involved and I can't say it worked in my case, but I can understand your significant other's reluctance to reveal herself.

I'd be curious of others' opinions on this suggestion.

Good luck.