How Can There Be Real Love in Heaven if Evil Isn’t Possible There?

Questions about how there can be real love in Heaven if the possibility of evil is necessary for real love and whether God could have created a universe where no one would desire to sin and be lost to Hell.

• If the possibility of evil is necessary for real love, then how will there be real love in Heaven?
• Couldn’t God have created a universe where no one would desire to sin and be lost to Hell?