I am going through the same thing with my bf... I too didnt have any attention growing up.. I as well feel that i am being too clingy because that is what he tells me.. I dont think i am too clingy.. even though i feel that i need a lot of attention that i never got.. i just think that i have alot of affection to give and he isnt as affectionate as me.. i would consider that as well.. im not afraid to have time alone and I think that is what seperates clingy with more affectionate..