I like to feel special and when it goes away i get possessive

So whenever i have a thing going on with a guy its just not for the hell of it like other people do, there are actually some feelings involved. When i have that thing with him i feel like im special to him and what we have is special. So when something gets in the way of our special bond like if another girl comes in or hes treating me differently one day than last time and i dont feel special anymore i feel the need to say something like i own him or i just simply get sad because i thought i was special but i guess not. Its not being jealous, its just me wanting to feel special again. In particular, the guy ive been messing around with recently, hes a flirt and straight up tells me who hed hook up with why and were open like that. He can hook up with someone then (i prefer him not to really but whatever) as long as he likes me the best sets me apart from the rest of them because im special.

I sound spoiled haha but its really not like that :-[ i just wish and want to mean something special to him...