Heads up with when you know ONE of opponents cards - best strategy?

[jackdaniels]

CROSS POSTED IN SMALL STAKES NL - Was Advised to Post Here.

So I am playing in a home game the other night and the dealer flips one of the cards over as he is dealing. The card is a Jack and the player says: "wait, I may want to keep it". He decides he does not want to keep it and the dealer keeps dealing. I then say that even if it was an Ace, then it is too much information to give your opponent about your hand. The guy disagrees and I suggest we play heads up w/100BB and he will always have an Ace of spades in his hand+one other random card. The game is set for next week and I was wondering what the best strategy for this type of situation would be.

If I missed any relevant details, let me know and I will add as available. Of note, this player is very weak but I am also pretty new to NL (having played limit for over 5 years now, NL for a month or so).