I'm a happy family man but I am really curious about my friend's wife
Why are you so curious about your friend's wife?
If I had to be perfectly frank with you, I actually find her attractive.
Well, you should just ignore these urges. You are married and it would be wrong to venture out of your marriage if you wife has no idea.
I'll keep that in mind.
That's good to hear. Temptations are natural for everyone, but you're married and you seem like you value and love your wife, so stick with her.