Is it wrong to crave for affection from someone you love?

No

Just don't get clingy. People need their space, even with the people they love.

Gibran on marriage/partnerships (from The Prophet):

You were born together, and together you shall be forever more.
You shall be together when the white wings of death scatter your days.
Ay, you shall be together even in the silent memory of God.
But let there be spaces in your togetherness,
And let the winds of the heavens dance between you.

Fill each other’s cup, but drink not from one cup.
Give one another of your bread, but eat not from the same loaf.
Sing and dance together and be joyous, but let each of you be alone,
Even as the strings of a lute are alone though they quiver with the same music.

Give your hearts, but not into each other’s keeping.
For only the hand of Life can contain your hearts.
And stand together yet not too near together:
For the pillars of the temple stand apart,
And the oak tree and the cypress grow not in each other’s shadow.

😔

No, but if you become clingy about it, that’s can be unhealthy.

Not as long as the manifestation of your craving is reasonable rather than unreasonable. If you are expecting their undivided attention every waking moment of every day then it would be unreasonable.

if the someone loves you back & gives you affection it isn't wrong but if your craving isn't satisfied because the person you love doesn't love you then it's wrong...because there's nothing right that can come out of it.

Nope...its not wrong.
I crave attention off my husband....but...rarely get it.
( unless its because HE wants attention off me!)

no that means you love them

No, it is not.
Why would it be?

No. It’s human.

No