You need me. What am I?

Question

I am usually roseate,

But not always.

I am sometimes inconsiderate;

But you need me.

I protect my jewel

That sometimes moves

Because without it;

I cannot confess,

To my lover;

All the love I have prepared.

After I confess;

I part,

And I love.

_{(This is my first riddle, so it might be easy or a bit off. If it is, please tell me how to improve it!)}

Answer 1

Are you ...

Lips?

I am usually roseate, But not always.

Lips are usually pink/rosy, but may be colored with lipstick

I am sometimes inconsiderate;

A cruel expression

But you need me.

Necessary for proper eating and speaking

I protect my jewel That sometimes moves

The jewel is the tongue

Because without it; I cannot confess, To my lover; All the love I have prepared.

You can't confess your love without a tongue :(

After I confess; I part, And I love.

Lips parting for a kiss

Answer 2

Not sure, but I like this answer anyway:

An eggshell

...

I am usually roseate,
But not always.

Eggshells are usually pinkish in colour, (the typical chicken egg), but other birds lay different coloured eggs.

I am sometimes inconsiderate;
But you need me.

Without the eggshell, the bird/reptile inside would die

I protect my jewel
That sometimes moves

The yolk is the golden jewel, and occasionally when fertilised it moves as it becomes an embryo

Because without it; I cannot confess,
To my lover;
All the love I have prepared.

The eggshell allows the embryo to mature

After I confess;
I part,
And I love.

When it confesses it breaks apart releasing the egg or the yolk to the world.

not sure but I like that idea :)

Answer 3

As OP has already accepted an answer and it fits perfect, just adding an alternate answer to this.

Is it

Rose

I am usually roseate,
But not always.

The flower rose is in rose color as the name implies but also can be seen in colors other than rose.

I am sometimes inconsiderate;
But you need me.

Rose prickles can hurt you while plucking rose, still you may need it.

I protect my jewel
That sometimes moves

Refers to the stigma of rose which plays major role in reproduction and it is inside the petals protection.

Because without it; I cannot confess,
To my lover;

Normally nobody use rose or any other flowers without it's stigma because without that the flower won't have it's natural beauty.

All the love I have prepared.
After I confess;
I part,
And I love.

cutting the rose from it's stem and giving it to the love.