I would be less concerned about your pine falling on your cottage than the large branches of the tree on the other side of your porch falling on your cottage.

Specifically about your pine:

1^st: are you sure that yours is a Red Pine? Typically, the Red Pine is a “pole” pine, meaning that as they grow, they become tall with straight trunks.  Not sure what kind of pine yours is.

However, whatever type of pine you have, though, the splitting of the trunk isn’t of itself a cause for concern, unless you are already seeing some cracking between the trunks. There are at least two other reasons for concern:

A): Your pine appears to be a stand-alone pine. All pines grow best in a forest setting, not as standalone trees. If the soil around a pine’s root base is disturbed, say for erecting a building, then such activity can easily damage the root system and start a deterioration process. A damaged root system is often a death sentence for a pine tree. Even compacting the soil around a pine tree can sometimes be enough to damage its roots. Pine trees + damaged roots = death sentence for pines.

B): Pine trees also need deep soil to sink its roots into for stability. (Pine trees + shallow soil = no depth for stability.) A pine tree’s root system can extend away from the tree at a distance as much as twice the height of the tree. (U.S. Department of Agriculture)

If the tap root does have at least two feet of penetrable ground, its strength is only found in the shallow roots extending away from the tree base. Shallow roots and no firm tap root depth is a recipe for toppling under high winds. Your pine tree may already be in a less than ideal location. There does not appear to be sufficient soil around the base of the tree, and this might be a larger concern for the tree falling. I would recommend having a certified arborist inspect your pine tree’s location, and help you determine the best course of action to protect your tree and your cottage from any potential fall.

https://www.michigan.gov/dnr/education/michigan-species/plants-trees/red-pine

https://www.canr.msu.edu/resources/forest_types_of_michigan_red_pine_e3202_9

https://www.canr.msu.edu/news/more-on-red-pine

I hope this information is helpful.