Why is my boyfriend being like this?

It it fair that my boyfriend is getting mad at me for wanting to get a sex machine because he actively chooses to jerk off to snap chat girls multiple times a day over any sexual interaction with me for a week at a time. And then decide to come to me once and so forth.

I told him if he gets to use other girls all the time over me I get to use what’s gunna get me off.
Why is my boyfriend being like this?
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