A friend of the engaged couple revealed to New York Daily News, "They fight and make up constantly. It's a cycle."
Apparently friends first started seeing cracks when Katy and Russ fought publicly at the New York wedding of model Janelle Fishman.
"[Russell] got angry with Katy because he thought she had drank too much. She ended up staying with a friend who has a place in New York. [He] 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 her all the time," added the source.
“Katy suspected [Russell] of cheating and it wasn’t the first time.”