As we found out that Buffy has a sister in Season 5. Buffy discovered that being a slayer also means you must protect the you love and save the world on top on that. Dawn Summers not just ordinary girl she has a secert within her even Buffy and Giles has discovered. Dawn is the key to open a portal of demons and then there was threat that got the gang scared especially Buffy name Glory a hell god. Buffy learned her gift of love and Death. As Buffy figured that Spike was the only person that is the strongest to protect Dawn from Glory. Dawn became attached to Spike. That she has a crush on Spike.
In Season 5 What is favorite epsiode of Dawn and Spike?
1) Checkpoint
2) Crush
3) Blood Ties
4) Tough Love
5) Forever
6) The Gift
7) Weight of the World
8) Spiral
Thats all I can remember of Spike and Dawn in Season 5
so if your favorite epsiodes are not mentioned in the forum please added in the comments :)