[shut up! is basically the message that Allen's hand gets across by going into Rin's hair and tugging at it a bit, just enough that he can feel it but not enough to hurt, really.

the lack of chance to pull back doesn't seem to be a negative point though hopefully Rin also appreciates a few nips and bites to the kiss. Allen's not the best at not being rough when he's heated and a kiss this involved has him distracted enough that his gentleman guise has fallen to the wayside.]