Does Katy Perry trust Russell Brand?

LOS ANGELES, CA - MAY 25: Actor/comedian Russell Brand (L) and singer Katy Perry arrive at the premiere of Universal Pictures' 'Get Him To The Greek' held at the Greek Theatre on May 25, 2010 in Los Angeles, California. (Photo by Frazer Harrison/Getty Images)A report is suggesting that soon-to-be-wed Katy Perry and Russell Brand argue all the time.

The pair are reportedly already aruging like an old married couple.

‘They fight and make-up constantly,’ a source close to Katy reportedly told the New York Daily News.

During a recent night out in New York, ‘[Russell] got angry with Katy because he thought she had drank too much,’ the source continued.

‘Katy ended up staying with a friend who has a place in New York while Russell went back to the couple’s hotel room alone.’

‘There have always been fights about other women — despite Russell talking about how much he loves Katy all the time.’

‘Katy suspected [Russell] of cheating and it wasn’t the first time. It’s a cycle.’