Crying because he can not see what he doing is hurt me?

so I meet my boyfriend on Facebook but he seen to add random women everyday and text then when I ask him to stop as it hurt me he say I need to trust him and it’s juat Facebook and nothing going on. It’s cause a lot of problems in are relationship but he keep saying I am just make a hole big thing out of nothing and to trust him and are relationship
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So I decided to add random men on my Facebook one had to be his work mate and he said it was embarrassing he was not happy he actually not listen to what I am saying so I through if I did what he does to me he would see but no I still get blame for everything it exhausting
Crying because he can not see what he doing is hurt me?
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