<human>: Give me a shortened version of the text

I'll keep this post short.  
The first incident was when he was messaging one or two girls on Skype. None of the messages were romantic in anyway, and he removed the app from his phone to reduce my fears.  
The second incident hurt me the most. I had accepted him messaging a female friend, one he has casually known for around 10 years and very briefly dated about 3 years ago. We had moved in together after a year of dating, and I've always been curious what they talk about (their frequency of texts ranged from everyday to once a week).  
As I had been nervous about the first incident, I asked him to see the messages. He reassured me it was nothing romantic and let me read them. Long story short, the messages were basic catch-up, sharing articles and work related. What bothered me is through our entire relationship, he had never mentioned to her about me. In fact, he still messaged her as is he was still living in his old apartment.  
I was furious, he had assured me he told her about me and lied to my face. Shaken, he sent a final 'goodbye' text to her, admitted he's been seeing me for a year and wished her luck on her own budding relationship with another man. Her number is deleted from his phone, they no longer contact each other, and has allowed and open phone policy with me.  
I believe he had no intention to cheat on me, but I can't help but feel like I'm number 2. My self-esteem and trust has plummeted. I feel like he had an open door to her but settled for me as she never flirted with him.  
Am I being over dramatic? He says he understands it's going to take me time, but he doesn't want to lose me. That he loves me, wants a life with me, wants me to be family.
<bot>: bf messaged longtime female friend, hasn't mentioned me at all in the 1 1/2 years we've dated. Feeling crushed and #2.