It seems to be a fad these days for celebrities to go mum about their romantic relationships.

But we hear that a Bandra-based superstar's sister is having a roaring affair with a budding actor.

The Bollywood actor-brother is known to dote on his baby sister. His sis and her beau have apparently been dating for the past few months.

Sources say it is highly unlikely that little sister will come out in the open about her relationship as it may not go down well with her superstar bro's image. The bro is known to be quite possessive and will most definitely not like family matters to be discussed in public.

Little sister's lover is the son of a former Indian cricketer, who is known for his controversial interviews.