A Natrona County man will be spending time behind bars after he admitted to strangling, and hitting his then-girlfriend.

Nathan Trost was sentenced to five-to-eight years in prison, after he pleaded guilty to one count of aggravated assault and battery, one count of strangulation of a household member, and one count of domestic battery.

Investigators with the Casper Police Department say in February 2016, officers responded to a call from the Wyoming Medical Center's emergency room, where they met a woman who had bruising over several areas of her body.

The woman told police her boyfriend, Trost, woke her up when she was sleeping.

She told K2 Radio she had hidden a wrapped Valentine's Day present for him under the bed.

Trost retrieved it, got angry, walked into the living room of their residence on East 14th Street, and broke dishes and furniture.

The woman walked into the living room where he grabbed her left hand, pulled off a ring, pulled her to the ground and then to the kitchen.

He placed both hands around her throat and began squeezing causing her to lose consciousness twice.

After other fighting, including the use of knives, Trost held her down and put a hammer to the back of her head and said, "'I should just kill you, wrap you up, and put you the desert, and come clean this up."

Trost later grabbed her by her hair and rammed her head against a wall about five times.

She was eventually able to leave the house and get a ride to the hospital.

Trost's actual sentence was three to five years for the aggravated assault charge, followed by two-to-three years for the strangulation charge.

A six month sentence for domestic battery will be served concurrently, or at the same time.