30 yo male, married, bisexual and scared - need help

[Bi_guy]

Hi
A bit of an introduction. I’m a married bisexual guy and have been with my wife for 10 years. I always knew I was bi-curious but was convinced I was straight because I mainly only had emotional crushes on girls. This all changed ages 27 when I realised I still had a strong sexual desire for guys, almost exclusively Asian guys. It took me another three years to be comfortable identifying as bisexual. My problem is that, I love my wife so much, but I can’t help find I am more sexually attracted to Asian guys. It plays on my mind and I find it hard long term to cope with my primary sexual desire not being my wife. But I am confused because I don’t have much emotional response to guys and I don’t see like I could be with a guy long term and grow old together. My wife and I have built a life together and have a young son. She is at her wits end with my struggles with my sexuality. I just want to know if any other bisexual guys are the same and how do you cope? I find not viewing images or porn of attractive Asian guys helps because it lowers my desire for them. But I can’t help fear that I would be better with an Asian guy and embracing it may help the emotion come. But I don’t want to lose my life and my family on a whim. As you can see, my mind goes back and forth.

In short, if there are any bisexual guys who are similar or gone through something similar, I would love to know your thoughts.

[Sportcustard]

Just a note on terminology that you may find helpful: 

We often talk about sexuality as something that encompasses both romantic and sexual attraction. It's easier to condense our own labels this way. For example, straight people are romantically AND sexually attracted to the opposite gender, gay people to the same, etc. A person's romantic and sexual attraction will generally be the same. 

But some people's are different to each other. For example, if you're a man attracted to women romantically, but not to men, but you're attracted to both women and men sexually, you might call yourself bisexual and heteroromantic. 

You don't have to. Labels are for us to use to clarify and understand ourselves, not to put ourselves in boxes. But if the language above helps you understand yourself, and helps your wife, feel free.