London, Nov 18 (IANS) 'Twilight' star Robert Pattinson took co-actor Kristen Stewart to a quiet dinner, fuelling rumours that they are having an affair.

The British actor, 23, invited his family over to Paris to meet the 19-year-old American star, reports thesun.co.uk. Robert's aunt Diane Nutley said his parents 'got on like a house on fire' with Kristen.

'They had kept it secret because they didn't know if they were together or not then,' she added.

Nutley also said Robert's parents will again meet Kristen in Los Angeles this week after the premiere of 'Twilight: New Moon'.