My gay best friend was robbed and killed. Killer lies and say my best friend came on to him!!!?

My best friend was a such a great person. he has endured so much in life because of his uality. You could no tell he was gay by looking at him. He just wasn't a tough type. he was robbed and killed by a 17 year old!! He did not know him. They found the 17 year old running from the scene where they also found the gun in his coat and my friend's cell phone in his possesion (stolen) I am so upset because this boy is so desperate to be freed that he is saying he killed my best friend protected himself from a ual ault!!!My best friend NEVER comes on to guys ever he knows that is dangerous. I am deeply saddened that this boy would lie like this after taking my best friends life in daylight. this little boy has tear drop tattoos on his face meaning he has killed before (gang symbol) Will they give him life ? I surely hope so. He is charged with 1st degree murder