I play alot of heads up and that line makes me think he has ak aq aj, donked the flop with air (aggro bluffy) then had to call your reraise with 2 "premium" overcards and no odds.,
woke up with tpgk on the turn and decided he hit one of his outs and had ur pair of tens dominated and thought he had the hand won on the river... i see alot of this in heads up because so many people will overplay a hand like ak or aq and i think it looks alot like this hand when they do.