Spike has never been alone, and even in the moment he was born he had Twilight... but that will not last forever, dragons have an extremely large lifespan, while ponies don't.
I'll be completely honest. I hated the first movie and felt neutral to the second. Why? The first one was just a forced way to throw toys into the market by making a very low quality film. Poor character developement, poor humor and overall poor plot. They tried to make it right with the second one, but it was still the same thing: -There's a bad guy.