Spike comes across Chrysalis after the events of the Royal Wedding, and shows pity on her from seeing the state of her, and her hive. However, she must still work to garner his trust before he will show enough emotion towards her to sustain her. He visits her in secret, and as the years pass, she accrues his trust.
Although more than just trust begins to develop. . .
NOTE: Weird shipping is weird, but it will pose an interesting challenge. Who knows, maybe this will blossom into more than a simple one-shot/short story.
Challenge here: http://www.fimfiction.net/blog/105794/new-years-shipping-challenge
Teen for some gore, and likely use of language - subject to change in the future.