The thing is it doesn't really matter whether it's him or not - this guy is seriously suspicious, who asks for sexual photos from someone they haven't seen in 8 years?!?! Not to mention the fact that you knew this guy or whoever he is as a teenager - you didn't spend any of your adult years together so I wonder really how well you truly know each other. I wouldn't spend another moment on this guy, he's clearly got something preventing him from meeting you. Whether he's married, involved in criminal activity or simply not interested etc not even long ago friends would string people along for the time you've been waiting. I wonder what's making you cling to the hope that he is what you once knew him to be? You're relationship ended and you moved on so maybe it's best leave the past where it is and carry on with the life you've built for yourself. Someone will come along and make amazing memories for you both and the guy you're being jerked around by will be right where he needs to be - in the past.