SHIP / OOP spoiler question - any evidence for Snape loving Lily yet?

[jotwo2003]

No: HPFGUIDX 58481

I've deliberately avoided reading the plot summary for OOP.  However, 
there is one thing I can no longer wait till June 21 for: do we find 
out anything in OOP that could be construed as evidence for the 
theory that Snape was friendly with or in love with Lily?  Thanks in 
advance for your help.

Jo