Thundercracker shudders softly when Starscream first touches his wings, head bowing and shoulders hunching.  The only ones he's ever voluntarily let touch his wings are his trinemates and the occasional medic on an as-needed basis.  That wasn't, of course, to say no one else had, but that had never been pleasant.  But he catches himself now on his reactions, a soft growl at himself escaping his vocalizer as he consciously pulls his head back up and forces his shoulders down.  And then-

  -he's relaxing in earnest.  Primus, that felt good…