I think your behavior towards your ex borders on stalkerish. I'm not even seeing things he's done...
in re-response to your comment, i had to take a big break for a second because i had a big anxiety attack from your response, im not used to takeing very brutal advice on something so personal but....i am going to be an adult and say your most likely right....i was obsessive with this person...he was my first lover and true friend and it pained me when he started to pull away.
when it started it was nothing like that first, i was scared to get close at first..but when i started feeling love and he got really busy it caused me to get obsessive...i do sometimes want to say sorry to him for that behavior but its sadly over now...i havent spoken to him in over 4 years and like what everyone else said, its most likely best to keep it that way.
now for the threesome thing, i acually messed up my typeing, it was a foursome he had..his best friend swaped there girl togeather..i really didnt mean to make threesomes or open relationships bad..i just was scared by it cause i have never been around that type of enviorment, at the time i didnt know how to handle it..
and for the knife thing is completly understandable why he would carry a combat knife with him...but again i never been around that type of enviorment befor, so i was scared and some what worried if he was paranoid alot by people comeing up to attack him..i have alot of anxiety on my own to deal with..it kinda was makeing me nervous alot at the time. plus he lived in such a nice area compaired to mine i..just couldnt help but judge..
im really deeply sorry if i offended you from my post i never really ment to do that to anyone but again thank you for your no BS advice..it really hurt alot because im tired of hearing bad things about but me and im scared of being judged,but i know you were just trying to slap reality into me..thank you