Stay with the spirit of the forest for a few days

You are confused, and the best idea is to stay with him and try to learn more about these lands and your body.

Once you return to your world, this can be undone, and you can recover your manhood.

Some days pass, and you learn some interesting secrets from the wild lands, the stars, and the balance of life.

He gives you new clothes and is gentle with you...
The only thing that he says is forbidden is to eat the apples from the trees but he didn't explain why.

The weirdest part is that you start to feel attracted to him. You hate to feel this way, but your body can't lie, and sometimes you masturbate alone thinking about his huge cock, and you feel deeply embarrassed.

In a moment of clarity, you start to think about your options.

Maybe it's time to say goodbye and continue your quest
Or maybe, you can try to fuck with him before you continue your quest; nobody will know...
Also, you can eat the forbidden apples; maybe he's hiding some secret power that can help you return to your world.