6 high flush draw on the turn getting 2-1

I did not make this play


Hero is BB with 6c3x

One limper in Mp hero checks

Flop is A7x with 2 clubs
Hero checks, limper checks
Turn is another club which gives the hero a 6 high flush draw, the pot is 1.25 bbs
Hero checks, limper bets, hero calls.


The reason I am posting this is because somehow he thinks his play is correct and won't believe me.