but i mean, ryan poston is one of a kind. >> reporter: to lauren, 29-year-old ryan was the whole package. he had the brains to match his good looks, plus a loving and highly successful family. >> it's sort of like the movers and shakers, people that have been around for a very long time doing very big things. >> you know, our families have been friends for 20, 25 years. >> reporter: tom ardawalla and matt herren were two long-time buddies who agree that ryan's spell wasn't just cast on women. >> he was a very magnetic person to be around. >> reporter: you would go and hang out in bars just like this one. >> yeah. we'd go out a lot, every weekend probably. >> reporter: they say nights with ryan in bars like this wouldn't result in your usual drunk talk, but rather non-stop debate sessions. >> he could literally talk about anything and everything. he was passionate about so many things. >> reporter: philosophy, politics. they say ryan had strong feelings on many subjects. among them, guns. >> he believed in the ideology of gun ownership. and he believed guns can make society safer. >> he a

. >> on october 12th, 2012shayna huber shot her on again off again boyfriend ryan poston six times. >> 9-1-1. >> ma'am, i have -- i killed my boyfriend in self-defense. >> police escorted shayna to the station where for almost three hours the 21-year-old told nine who would listen that she shot 29-year-old ryan because she felt her life was in danger. >> i had my head banged and i just picked up the gun and in the middle of him doing something with his arm or saying something crazy shot him. >> but prosecutor michelle snodgrass believes this was cold-blooded murder and that the motivating factor was shayna's relentless obsession with the handsome lawyer. >> she wouldn't stop texting him, obsessively texting him. she showed up unannounced all >> by the fall of 2012 authorities believe the situation had reached a breaking point. ryan had made plans for the weekend that did not include shayna. >> in her mind this was a failure of sorts, and shayna didn't fail. >> he was moving when these shots were fired. >> the defense argues that ryan had a violent temper and shayna's mother sharon hub

within hours of putting bullets into ryan poston and watching him die, she danced and sang. ♪ she wass was cold-blooded murder and that the motivating factor was shana's relentless obsession with the handsome lawyer. ryan's friend, allie wagner. >> i think she had a goal in the beginning to make him settle down with her. when she wasn't becoming successful, that became a problem. >> reporter: as shana became more possessive, ryan's exasperation grew. in a text to his cousin he wrote, "this is getting to be restraining order-level crazy." by that fall of 2012, situation had reached a breaking point. ryan had a date with this woman. >> ohio! >> reporter: and had told shana he didn't want to see her that weekend. >> in her mind, this was a failure of sorts. and shana didn't fail. >> she was moving when these shots were fired -- >> reporter: the defense argues that ryan was the one with the violent temper, and shana's mother, sharon huber, says investigators are wrong about her daughter. >> shana hubers is not a murderer. no, she is not. >> peter van sant is with us. good morning. her beh