"[@Background Pony #74E8":](/images/2652853#comment_9713985 ) There are actually quite a few times Spike was kinda pervy, but he has grown and matured since then. I'm talking episodes from earlier seasons of AT&F. I don't know how to post links here.
But there was an episode that directly talked about this between Soarin' and Zephyr. Soarin' put it together so nicely and said that unlike Zephyr, he grew up and matured.