There may be a few very rare occasions where someone is called to minister to another person of the opposite sex, but even in those cases, there is no compelling reason to exclude the significant other of either party from the interactions. A couple can minister or be ministered to just like an individual can.
Make him choose. He leaves Vegas World and starts living in the real world where you are and where there are plenty of better places to meet Christians, or he stays in Vegas World and loses you. And what the others have said, if it's all so above board and holy, why does he have a problem sharing it with you and letting you be a part of it?
Sadly, he already chose Vegas World.
I want to add that he never "hid" these woman he was meeting from me. But even still, it drove me crazy every time I'd log in the stupid game and he'd be talking of yet another woman he had met who was either needing his counsel/guidance and/or another Christian woman that was soooo nice that he met and had talked to. He added there is no way really to talk in "open forum" in the game, so he had no choice. (LOL, I know what you'll will say to that.. yeah I know. Makes me cry, but yeah, I know..) But thus, when I was hurt and upset about this and him even seeming to WANT to tell me about these wonderful woman he's meeting, he said all the things above that I mentioned in first post. That's why I had to ask, as yes, I was going crazy.
So then...I also spoke with his mother. I called her because he had told her he talked to her about this all and she agreed it was "my issues". So I had to call her!!! Well, when I did - he neglected to even mention "VEGAS WORLD!!"" So yeah, there it is. So then His mom said a couple things to me, that even you all have mentioned above. But it's done now anyhow.
We are all learning, I'm learning too and by no means perfect. I'm not no holier than thou at all, Thank the Lord only by His Grace am I saved.... but yeah I couldn't stand that Vegas World for the most part. Some parts I've played and liked (sorry to say, I do like playing some games online, but I work full time plus some, so I hard do that anyhow)
But yeah, I even once asked some secular men on there in Vegas World, if the characters even though they are cartoons did anything for them. And they said yes sadly. So I know it's a temptation for men.
All in all, perhaps this was his way to get out of the relationship too ( I was reading that online, guys will do things that the woman hates if he wants out but is too afraid to do the actual breakup) So...there we have.
I will Trust in our Lord. And I will still pray for him and ask the Lord for healing on both our parts and to take with me anything I can learn, even if is partly trust too.
God is SO Gracious. And I thank everyone here so much for their time on this. I SO needed this encouragement and edification. God bless you so much, 1000 fold!