Somethings wrong with me

I lose interest in relationships after a week or two. I dont know why, I save myself until I really really like someone and we've known eachother a while but after that time frame of a week or two I just get so bored of the relationship. I can struggle through it but it sucks so much and I just hate it. I dont want to be like this, I want to be committed and love someone, but I just can't and I dont understand why I can't or how to change that.

Still a virgin btw so its not like we have sex and then get bored 😅