I have rather unique experience with a situation like this. Except I was the "husband" (boyfriend) in this scenario.
My ex met all these people online in a game and decided to be real life friends with them too. Eventually she wanted to go meet them (after telling me they all think she's hot) I refuse and she goes anyway. A month later she dumped me and I got an email from her with the entire text conversation with the guy she dumped me for. (Did I mention he lived in his parents basement and was 26 and she was 19?)
Fast forward a few years and she married the !@#$er. Fast forward a year after that and they got divorced. I call it poetic justice, seeing as how I got the perfect women now (Jboyst can attest)
But from the "husbands" perspective. I wouldn't trust that girl in the slightest. If she can reach out to people online when she's married, whats keeping her from doing that to you in the future? Or is she talking to multiple people from multiple games? Is she just looking for attention? Wanted to feel wanted?
I can also say that it made me feel totally inadequate that she did that to me. I've forgiven her for many things, but I will never forgive that girl fro going behind my back like that.
I know it may all seem like rainbows and sunshine right now and I'm sure you're a hell of a nice dude, but tread carefully here.