The truth about pine
Is there any truth about pine wood messing up your indoor fire place?
No, it's completely false. Pine, when properly seasoned, is perfectly safe to burn in a fireplace. The common misconception is that pine, and other softwoods, create creosote build-up in chimneys. It's simply not true. Burning wet wood and having inefficient fires is what causes problems.
In some areas of the world, including many areas in the western US, pine is used as a primary source of firewood.
The only downside to using pine, is that it doesn't heat as well as superior hardwood species such as oak or hickory. Other than that, it's fine to burn. Just make sure that your wood is properly seasoned and you won't have any problems.
Hope this helps!