First of all, you have good chances to get confirmed the2nd ticket also. All the best !!
Otherwise, if it is E ticket, do not take a risk as though the names of Wait Listed Passengers are shown in the chart who are there in a ticket (same PNR) where at least one passenger is either confirmed or under RAC; yet in practice - they are not allowed to travel on the strength of that ticket (I wish to openly convey here that all over IR, different practices are there about this - confusion prevails). If it is a Window ticket, though as per rule the 2nd person can not undertake journey, yet if he / she is found aboard, not...
more... treated as without ticket. In general practice is there that if the TTE is not tooooooooo strict and the fellow passengers do not take objection, can be accommodated.