Violent Boyfriend

The Violent Boyfriend whom presumably born around the same time was Prue Halliwell's ex-boyfriend who violently attacked her in a heat of rage in her teenager years.

Be Careful What You Witch For
When Prue accidentally wished that she wanted something that she could only get if she was seventeen, a genie granted her that wish and turned her back into her seventeen year old self. At the age of sixteen, Prue was going through a rough rebellious stage. When out one night with this boyfriend, he attacked her which caused Penny Halliwell to presumably erase him from existence since he was never seen after that incident. The events of this would later be played out again when she gets tricked into going on a date with a warlock and he attempts to kill her.