Boy Trouble 😥

ok so I am 15 yrs old and i’ve had a couple boyfriends before but they don’t usually last. Like for the first couple weeks i’m pretty excited about dating them but then i get tired of the relationship and break up w them. I DONT KNOW WHATS WRONG WITH ME AHHH . i don’t do this to be mean ofc but i just can’t help losing feelings so easily. what am i doing wrong? please help :/