Boyfriend want sex everyday

My boyfriend wants to have sex everyday . Some days I’m in the mood some days I am not. He’s never cheated but now he saying if I don’t give him sex everyday he will get from someone else. I am not sure what to do. We both 21 n been together for 3yrs. Also he just mentioned to me that if/when we get married he would like to have sex with other women apparently he wants to explore. He also said when we married and i have everything i want I should allow him to sleep with other women. I told him do it while he’s young because I wouldn’t want that in my marriage when I’m older. He said he can’t until he makes a a lot of money so that women would approach him. I’ve considered just ending the relationship but we was best friends since freshman yr of high school then we started dating our senior yr & my family been around him a lot so they always asking for him, he is practically apart of my family. He has been watching fresh & fit podcast n it’s truly been a pain in my ass😒. Opinions welcomed don’t be rude pls