I think he cheated?

So I've been with my husband 8 years. He never had any friends throughout the whole time. We were so good with each other and had two kids also.... Then a few months ago he tells me he used to talk to this girl ( online, never met her) before we were together. She found him on Facebook and they started talking. A few weeks after that he comes home and tells me he met her and almost had sex with her but he got soft and felt bad because he was going to hurt me.... I forgave him because it felt like a really sincere apology. He still kept her as a friend and I was trying to b ok with it, but a few weeks later he comes home with a hickey and he said " I didn't have sex with her. I made a mistake by making out with her" I didn't really forgive him for that. I felt really betrayed and didn't trust them anymore, but they still stayed friends cause I didn't know what to say or do. He knows I don't like her and I think they r playing me, but he says " don't worry it's nothing ". Well yesterday I texted her from his phone saying " I can't do my wife dirty" and she said " then why do you kiss me and do the stuff you do" I got pissed and told him and then he didn't talk to me all night since his brothers were over, but he did try to say " I don't know why she say that nothing even happened " .... Now he's mad at me and idk what to do. Do I give him silent treatment?