Two new house mates have entered the house and immediately caused a huge stir THE doona isn't quite dancing, yet, but the inclusion of two frisky intruders has seen sexual activity in the Big Brother house and PG-program explode. A steamy spa session between new housemate Ava and resident ladies' man Josh aired on Monday night's show and ended with the pair sleeping together - but not in the biblical sense, producers assert. As the series hits the 40 days and 40 nights mark, the instant and intense couple were involved in a "pashing and light petting session," which threatens to test the boundaries of the revamped kid-friendly format. The pair became physical during an evening pool party involving the group, but separated from the pack - and Josh's ardent admirer Angie - to share their first steamy kiss. The show's executive producer, Alex Mavroidakis, denied any adults-only content would go to air but admitted that "when two people want to get it on, it's going to happen". Recommended Coverage "We have got a format to protect, but we're not going to stop them from doing whatever they want. It's not that we're trying to sweep it under the carpet, we just can't show it if they did." He said it would be Channel 9's decision to commission a naughtier, up-late version of the show, but the network has been steadfast in staying away from raunchier content this year. The addition of a new "alpha male" Sam should further shake