Apologies for the length.
So I've been sitting next to this girl at work for about 9 months. We know each other real well by now, she is my closest female friend. She introduced me to a couple girls I dated and has been a good friend since I've known her. I've talked with her a lot about my mom going thru cancer treatments etc and she told me if I ever needed a ride to go visit my mom to just say he word. So like I said, been a great friend for the most part.
Lately though we've been clashing, I feel like mostly through no fault of my own. She has seemingly been trying to piss me off on purpose and even admitted to doing it, and said she's surprised we haven't gotten in a fight because we're so alike. Anyways, my roommate/coworker, her and I usually hang out on the weekends or for happy hours, she sleeps at our place probably 2 nights a week cus we live close to work. Anyways, recently all of a sudden they've been doing lots of stuff without me, so I figured they might be hooking up or something. Long story short, I have good reason to believe that's not the case but they are making much less of an effort to include me than before.
Yesterday I asked her about doing a movie night since we had been meaning to do one and we might be snowed in today, she basically gave no response and wasn't interested. I told her id probably leave work early then and come back later after dinner.
My roommate texts me after dinner asking if I'm in for the movie night with her, she had basically brushed me off only to plan the same thing with him about an hr later after she knew Id be working that night.
Given that I'd been feeling like a 3rd wheel for about a month now, I was curious and checked their G-chat logs at work (everybody's pw is their last name). I felt really terrible about invading their privacy like that but did it anyways.
In the chat they were talking about what sounded like a short trip/drive they had already planned for Friday. She said something like
"What are we gonna tell Sam(me)? That you're running errands and I'm with my sister? I don't wanna lie but I don't want to have to deal with him." And they basically decided to lie to me about what their plans were to avoid me this weekend.
While I definitely am in the wrong for spying on their chat, these are two of my closest friends and I feel like it's beyond messed up for them to do me like that. I thought we were cool and she enjoyed spending time with me, but lately have been feeling the cold shoulder from her and to see it spelled out like that hurts pretty bad to be honest. Especially because I don't feel that Ive done anything wrong or changed since we've known each other. I'm trying to move on like I didn't read anything but its hard to act straight knowing somebody would lie to you just to avoid hanging out with you.