the question is....was he leading ? he had a bigger stack than you yes ? if he was the big stack its normal that he have done this...he was trying to be aggressive and get u called every flop to bluff you out after it and slowly get blind you out...if u would raise one of this hands he can fold which wouldnt be too bad for his stack if u was in big lead...you should play all connecters .. 7 8 or up and´if u got any ace u should push...u can also push with pairs or K 10 if u are low stacked in the heads up
u should play some play money heads up to get better but often the play money players are donks lol...but try it u can see morge player skills and learn good for eral hard heads ups
best of luck to you