Help plzz....

So my bf has this girl friend. I was uncomfortable with how close they are and he knows. I tried to talk to her over texting to see if I could just get to be ok with her. But I cant. I just dont feel comfortable. She has his number address and vice versa. I just hate the way I'm feeling. I dont like how close they are. He even started tilting his phone away or keeping it away because he knows it will upset me. He has just stopped using his phone around me and hides his texts. He said he would stop being friends with her but then I'll seem like an asshole. I just. I'm at my end with this. I've cried over this bitch for too long. Help please

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Edit: just learned he used to hug her. And within the past month he has too. The entire time we have been dating hes hugged her. Is it wrong to be crying?