@jenn I agree. Finn has always had feelings for Rachel, and it shows. Also, he has caused both Rachel and Quinn pain by not figuring out his feelings before jumping into a relationship with Quinn.
If i was in quinn position though i would be hating on rachel big time.
shes obviously flirting/pining for my boyfriend right in front of me the girl he kissed first time around during there initial relationship. i would most definitely go after her then get all mad at finn about it because that would only strain the relationship further.
i love quinn even though this season shes been a bit psycho... but honestly given her circumstances more then understandable