My (26F) Husband (28M) cheating in games

I (26F) have been noticing my husband (28M) play a specific game a lot lately. All along while we’ve been tgt he’s been playing games so it didn’t strike as smth weird to me. But lately he’s been SUPER ADDICTED to this particular game, and addicted I mean he sleeps at 2/3am every night even if he has to wake up for his 9-5, leave his computer on overnight to let the game run, so if he happens to wake up in the middle of the night he can continue playing, and every waking moment he’s on the game. Recently ive been noticing he’s talking to this person a Lot One on one on the game. Initially it was just a “oh what’s going on in the game” from me, but gradually it’s becoming like “oh you’re with __ again?” And he’ll always refer to the “person” as “HIM” “HE” to me, but it was very obvious this was a girl bc of the username, the character dressing and the way she typed. One afternoon when he went to shower he left his game on, I saw that he was in this place called “__’s abode” and she was in there too and she was actually chatting with him and talking about her day. Like two of their characters had matching items and clothes just like a couple. Even tho the convo was seemingly innocent like just sharing about her day, I feel betrayed. I wonder what they’ve talked about behind my back.

Knowing my husband’s character, if I confronted him he’ll prolly either

1. Brush me off telling me __ is a guy
2. Tell me im thinking too much IM CRAZY 3 ignore me

It’s crazy life’s tough. Am I tougher tho? Idts