Cheating husband ( venting)

Ok so my husband of 8 years has asked for a divorce. That was 10 months ago. Let me take you back to November 2015; my husband has decided to bring the option of a threesome to the table to "spice" up our marriage. I wasn't in agreement in the beginning bc he's cheated in the past but it had been 5 years since. He wanted a threesome with MY FRIEND Meg. I thought about for a while. Around the beginning of December I was told she wanted to sleep with him first then to a threesome. I was not for that at all!! Mike (husband) basically begged for it. Fast forward to new years eve. I was tipsy of course and he asked if they could go have sex, like a dumbass I said yes. We were then to have a threesome a few days later. It never happened. January 19 he asked for a divorce on the grounds that I have no goals or ambitions and I treat him like shit. Two days later I see the phone record and there It is in black and white that he's been talking to her all hours of the night and day and weekends since AUGUST. So, when I bring this to him he changes his tune to that he wants to work it out, but he is military and we had already gotten order to VA. So me and our two kids move down here by ourselves to get ready for him to transfer. That was January, so for 9 months he has been telling me he loves me and we are going to go to counciling...blah blah blah blah blah blah blah blah bullshit!!! I find out when he comes down for our sons birthday (October 31st)that he not only moved her into our house but she was even sleeping in my bed with MY sheets still on it. I know this bc he took pics and it uploaded to OUR cloud (idiot). Hes been seeing her since the day i drove away from that house. So for 9+ months he's been lying and manipulating me so I wouldn't move to AZ to be with my family. It's gotten so ugly. He's threatened to turn me into the cops bc I smoke a little pot and he's also gone as far as telling me I'm a bad mom bc I feed my kids chicken nuggets twice a week and they eat tv dinners on baseball nights. Idk why I am posting this, I guess I just need to know I'm not crazy for filing for divorce myself bc her it is almost a year later and he hasn't filed.