She's such a nice woman for you to spend your rest of life with

[Silverobama]

Hi,

My friend Fei has a girlfriend now and the other day I talked with Fei and his girlfiend. The woman is very nice and we've talked with each other for a few hours. I believe they will live happily ever after.

Today I talked with Fei online and and I told Fei:

She's such a nice woman for you to spend your rest of life with.

I wonder if the italic sentence is idiomatic.

 

[Tarheel]

I think you mean that you have talked to her quite a bit

Perhaps:

I think she would be good for you. I can see the two of you having a happy life together.

Of course, what you say (or don't say) depends on your relationship.

 

[Rover_KE]

Instead of ‘… your rest of life with’, say ‘… the rest of your life with’.