do the actors really have sex in a kama sutra?

[yooohooo]

i just watched a kama sutra.. and i think it's just acting, but i still have doubts.. how do they act that way without penetration? or is there a penetration? please explain..

 

[Kairi]

whats that?

 

[punk_ch!c]

. . . dude.... really???

 

[christino]

is like the starz movie, they are just fake