Terra was able to fool everyone, with Beast Boy even falling in love with her, and helped Deathstroke in his attack on the team in “The Judas Contract”. Terra was a damaged young woman ...

The only really outstanding moment between the two was when Robin comforted Beast Boy after Terra left the Titan Tower without saying goodbye and, to be fair, it was Robin's fault she had left.

Source: http://insidepulse.com/2012/04/12/the-culling-spoilers-what-3-classic-new-teen-titans-make-their-new-52-debut-in-superboy-8/ Now from what I`ve found out ...