Need help with PASS defense

Ok my friend uses :
shotgun w/ twins and 2 RBs
outside man runs post, inside runs slant and the Rbs go to the flats. his TE also releases.
most of the time he throws to the slant because no matter what team, if im in man he beats me, so im forced to use Zone but theres always problems with that. What Do I Do?

i see your problem i use this play alll the time it is easy. go man to man on a 3-3-5 and put your man on the inside receiver, the one who is runnin the slant. stay inside and he probly wont get him. the post is hard to complete 4 him and the rbs and te wont hurt u too bad.