The physical taboo of opposite sex is very much a cultural divide and taboo.
As someone has already said right up to the beginning of 20th century the whole ballroom thing was frowned by clergy and church before it got accepted as an art form .
Now, it not meant for flirting , though on a social level in the West it is a very much a romantic hunting ground,where the women easily outnumber the men in search for romance.
In the advanced competition stage, physical contact is absolutley mandatory for the man to lead the lady in any step, turn , line positions etc. Standard ballroom dance ,requires body contact all the time , but mainly at the hips
Now I am sure you joined all this for fun and games, So what is the double take in your question. Do you really want people to believe that your moral compass precedes or restricts in your philsophy of participation.?
Social dance even in Indian culture is very much a flirtatious movement even done singly with extreme hip movements.
what i find is RAMPANT hypocricy IN ALL THIS
See nothing is supposed to be public and expressive ,yet you will find suppression and all sorts of trespasses, rape of minor girls etc.
I dont think that broad mindedness is still in the non urban disctionary in India , which remains a country of double standards in these respects.