OP, you re yearning more for a state of mind, a set of circumstances, an energy in the relationship than the guy itself.
Everything has changed in the last 10 years, even if you take the same people, it will never be the same.
You can't get that moment back, you can't get the guy back, but by contemplating over why it has had such a pull on you, you can find the bits that made the relationship special and look for them in other people, for the woman you are today.
When I was young and for way too long and for way too many underserving guys, I was a limerence specialist, and it was so painful to be perpetually in agony, to be submerged by this constant, impossible yearning and pain of feeling unloved, ignored, alone.
I wasn t feeling like this because these guys were wonderful, but because of me, my traumatic upbringing and low self-esteem, that made me cling to any illusory hope of happiness and safety way too hard and way too long.
I didn't have the strength to accept basic truths like the fact there are millions of other men and I would be better off trying out with them rather than eternally pining for a single one, that I can stand on my own 2 feet whatever my dating status, that I deserve happiness and I deserve a guy who instinctively likes me and wants me, not a guy I should wait for, convince or engineer stuff to get there, that I deserve to have my life (and all my waking hours of thought) not reducing myself to powerlessly waiting for something external to happen...
And of course my romantic life only fell into a good place after I got this strength for seeing things as they are and all the good stuff I actually had going on for myself, but letting go of even this illusion, I know it s hard, because if you cling to it so much even if it doesn t really exist, it s because you feel it s all you ll ever have, but that s not true, OP, that s not true.
I hope you get there OP, because I really remember how you feel, massive hugs