LDR boyfriend watches porn

So i’m a 2 year long distant relationship and I just found out that my boyfriend watches porn. I do send him nudes and videos and even on Facetime we have our little time to satisfy him but he says to me that when I don’t send him anything he goes and watches porn.

The fact that he watches other girls to get himself off really makes me uncomfortable and I tried talking to him about but it ended up in a argument and blames me for not sending him nudes when he wants it.

He knows i’m not a very confident person with my body etc and I have sent him a lot in my eyes but Idk what to do