They're not really sweeties but rather share a bond not unlike between two of Shakespeare's A Midsummer Night's Dream's four protagonists. In this case Joan would be like Hermia and Jason would be in the stead of Demetrius, the latter hates former and chases after the former former but she hates latter and pursues after the former former former (read the short of it see what I'm getting at). It's a complicated issue but this doesn't stop Joan from asking for help from Jason if it serves her purpose and Jason doesn't mind helping Joan if it means scoring brownie points with her... or not.

* This strip was published Oct. 13, 2004.