There is no earthly reason Spike would find two royal ponies, one he loves and one he hates, in what appears to be a compromising position.
There's also no reason for there to be a myriad of mixed responses in the families of these two ponies.
And I'm fairly certain there's no justification for the bonding experience that being discovered becomes for them.

But, that little scandal of the century is exactly what'll happen in this story.