Tamerlan Tsarnaev called Katherine Russell,  a "[expletive]" and a "prostitute," friends of the bomber's widow have revealed.

This was just one of the disturbing details of the controlling manipulative relationship between the Boston Marathon bomber and his now-widow that came out when NPR's Laura Sullivan spoke with Russell's college roommates from when she was a student at Boston’s Suffolk University.

They described Tamerlan Tsarnae as a "combative and angry" man who would insult her and sometimes even throw furniture.

The 26-year-old terror suspect who was killed in a shoot out with police on Thursday night was known as a big partier, drinker and smoker during his initial on-again, off-again relationship with Russell, 24, from North Kingstown, Rhode Island.

Tsarnaev was arrested for domestic assault and battery on June 28, 2009, and records suggest that it was not against his future wife but another woman who was of Portuguese decent.

"I slapped her," the amateur boxer told police after the incident in Cambridge, Massachusetts, reported Breitbart News.

According to NPR, Katherine got pregnant her senior year, and her former roommates say that she then left school and dropped out, and she never finished college. They say that she really pulled away from her friends, that she cut off contact with them and her family.

The volatile couple eventually married in 2010, after which Tamerlan became very religious and demanded that Katherine – who now has a three-year-old daughter named Zahara - also convert to Islam and cover herself.