No looseness?

I really wanna know if this happens to anyone else. So I've been lucky enough to stay with the man I lost my virginity to after 2+ years and still going( found  some engagement ring searches on his tablet when I borrowed it). Now I've heard that woman can sometimes become loose in the vaginal opening but every time we have sex, he says I still feel just as tight as the first time we made love. Now I am definitely not complaining in fact I feel lucky about it, but I was just wondering if anyone else is like this too?