Am I overreacting?

Currently, my boyfriend of almost 2 years has been liking & saving photos of girls on Instagram.

I just noticed today that he started following this account:

AND the photos that this account posts are not decent.

In the past I’ve told him that this stuff bothers me and the reason why.

But he keeps doing it. It’s caused fights multiple times before.

Am I overreacting or would you be upset too?