He said I'm "super loose"

I just had sex with someone (the 2nd person I've ever had sex with and the first guy was just a little bit bigger I was with him for 4 years now this guy messaged me after I left and said can I be honest I said yes he said honestly your extremely extremely loose.Like I didn't feel you at all I've never had this issue with any other girl ever they have all been tight.I stated balling at that point it hurt me so unbelievably bad.What can I do to be tighter...how did I get so "loose"