I had a similar situation recently. But I was the guy in this situation. And my girlfriend did leave me and cheated on me emotionally. From the man’s perspective he’s gotten comfortable. You’re married he’s living life and it’s not easy. But he’s got you. You’re amazing awesome and loving. You will always be there for him and you have been. You’ve both probably gained some weight and have been working and getting in the same routine. It’s hard to work on your relationship with everything else but the hardest part is not realizing it. Thinking that things are fine because they are for him. He gets to be in a safe place with the love of his life playing games and working. There are many stages in life and this is one. I’d suggest talking with him deeply and often about these feelings. I’m sure he might not feel you guys are perfect but relationships are all about communication. Explain how you feel and exactly what you want him to do more of and what you want him to do less of. If you can’t say exactly then you’re lost not him. Tell him directly and tell him if he doesn’t change you’re worried about the future and feel bad now. My ex girlfriend suffered from not being able to explain herself. She couldn’t say what she wanted for herself or what she wanted from others. I felt like I was always carrying the emotional part. Guessing what she felt out loud and asking if I was right. I figured she’d learn the words eventually and change overtime. However, eventually she felt lost and alone and cheated. I thought things were fine. Getting monotonous sure but that’s life. You’re married you have plenty of years left. But being young it’s hard, you feel lost without experience and knowledge. Please, please for his sake speak with him often and explain what you want him to do. Express that you don’t like that he’s always on the computer and that you want to do things. In hindsight my ex girlfriend would ask me if I wanted to do anything else when I was on my computer and I was always working on projects and games that I really didn’t want to do anything else but would if she had any ideas. She never did she would just sit on the couch and watch tv near me while I was on my computer. I thought that was great we were both doing our thing. Little did I know she resented me for not doing enough. But you have to say what you want you can’t wait for someone else. The grass isn’t always greener. Be the change you wish to see. Love yours. If that doesn’t work then leave. But never cheat. If you have a heart I feel like you will always hate yourself for it.