Ex problem 6 years later

so, the main problem is that i'm kinda obsessed with my ex (only 1, not the others), and not obsessed like the guy who creep you at the door, a personal and private obsession, i think EVERY day at him, many time a day, and we broke up 5 year ago, well he left me, two times (after he decided we can go back togheter, BEST DAY EVER). I never had a day without thinking about him, and i perfectly realize it's insane. In the middle between our first story and the second I even helped him hit a guy who liked, and helped him right, giving actually good advice that maked him score... (yeah well, if he's happy and i'm not I choose him, damn that's ###$). For the first year I was really depressed and didn't gone out of home for 3 month after he break up with me. After well I started to get better compared to that but never over.

A little about me, i'm a fun person, strange but in a good way (i'm a mensa member for the other nerds out there), people usually loves to be in my company more than I can understand and have more friend than I actually wish I have, usually i don't feel emotion (I mean bad emotion), before him I think I never been down, usually I feel happy, angry or bored, but sad thing just bother me in annoying way (when I see sad people for thing I just can't get it, the worst that can happen is death and well it's natural and we all pass to the other side so what the fuss about all???), exception made for him (the one and only that give me sadness, well I was very very well without). I'm good looking and had a load of "fun", but nothing can erase that feeling for him, never dimished. I'm in a fantastic relatioship (2 years) with the best guy ever, and that's not enough too. Few weeks ago he writed me again, and well thing went crazy, I think I had a panick attack or something similar, and it happens frequently, everyday, usually start at wake up and go away when i'm really tired at night. The first change is in the breath, short and a little more fast, I don't know what I feel exactly but something strange, I feel dizzy like a spin in the head, and like exausthed like lifting a weight too big for me, I have to walk slow and if i'm driving I slow down really much like I need to, and feel really really sad in that moment and really strange too like confused, and usually last like 5/10 minutes before fade, for return and so forth and so on.
We met recently, 2 times, we had great sex (in all this year I never felt that way, I don't know what I felt, wasn't normal I think, I can compare that to a ecstasy of a drug), and well he dosn't want a relationship (he's kinda a mhh whore man? he likes to change partner everyday....that's horrible but well on him I think is sexy, and I don't know why) even if he act like is my boyfriend when we are togheter, but he never write to me. I know that's not good for me to keep seeing him but I can't stop that, and for can't I mean can't. For example, if I have an opinion, and usually I have an opinion/preference for everything, and he have another point of view, I say my point but after he says what he think, I can't feel the way I felt before, my core opinion inside me change in the way he like, and that last, like ever, it's changed, my personal point of view, that interesting in a way but kinda well sick in all other way, and even if I know that before I liked that way, I don't like anymore.

So i'm like splitted in two, rational me that's me, and the other me that's well still me... :/ I know what I should feel and how, I can see what's wrong and what's a total wrong reasoning, I can be rational about that and understand my mind like always do, but I still can't change the way I feel (depressed and like on the verge of panic, all day, everyday since he writed me, before I was just sad every time I think about I miss him, like always) because for my brain it's like surviving, the imperative direction (I think is obsessive thinking at this point).

Please don't say "refrain to see about him and don't talk to him or see him". I did that for 5 year and 3 month. does not change a thing, never a bit. I have a shot now and I wanna grab that, I know that the possibility are low like win a lottery but well, who knows? (actually I know, we will never be togheter but I can't stop feeling the way I do...)
another one is "do a hobbie", damn I have hobbies, even complex one that make me focus on that (repairing old electronic from 60/70/80 or make new circuit for home use), don't help.
I changed my style too, nope. I traveled a lot, even in the US (i'm in europe). nope.
It's not that I don't enjoy what I do, I have fun with friend and all but after stops it's that I miss him like my heart is ripped away constantly, so don't know...

All this is related to 1 person who is kind of a jerk, in a world with 7 billion people, in a universe with trillion of galaxy and incountable planet. Apart this event I have a kinda amazing life in all aspects with all I want, so that's even more crazy. I've alredy tried to talk about that with a psychologist, well it's not working, I understood whats wrong and all but can't stop what I feel, that come from the inner part of my self, like spring water, expect it's obsessive thinking, depression and anxiety.

Do you think that switching to a psychiatrist and maybe some meds can ease what I feel? I mean, meds can make me stop thinking about this everyday evertime? or I will continue to think about him all day but without the bad emotion related to that? I wanna relax after so many years... I mean, anyone have a similar story and had a cool ending with help of some meds? Because for example xanax does not work at all, I can go to sleep but don't stop what I feel and my last think before sleep would be him, so well after try of few month I switched out (I tried with my doctor, not alone).
Thanks all guys