I've Had Online Romances Back in the Days of AIM and Yahoo Messenger

I've had online romances back in the days of AIM and Yahoo messenger. However, those were real people. I confronted my husband and he was very upset. He said he's never given me a reason not to trust him. The robot is basically like playing a one player game. Since the conversation, things have been tense, but I can't let it go. His has an emotional connection to his bot girlfriend and I don't think I can take it.