The Doctor hadn't realised she had noticed anything close to a blush. He thought he was doing his best to his it. He was confused why he would be in the first place. He didnt seem that aware of any of his emotions. All he knew was he considered her a friend.
"Yeah that's good." He hoped people would learn to not bring back flowers like those. He was breathing heavily and thinking.
" Guessing Clara and my 11th still there, " he figured eleven would have taken a moment to rest. Eleven breathed deeply and stayed close as he slept.