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

Soo let me start...
I am in 8 months relationship. This is my first serious relationship in life and that's why I dont know how to handle things correctly.
My girlfriend works at restaurant, 4 times a week, mostly from 3pm to 1am. One of her coworker likes her alot, she told me that. I told her its not bothering me if she works with him, but once when we were having the dinner she was texting with him. 
I did not say anything because i knew she would be mad at me but i was not ok with it at all. This guy is a junkie, not so good looking(sorry for being mean but my gf said exactly same things). She told me that he is only her friend and that I dont have to be worried about it...yeah right... 

Deep inside me i know she wont cheat on me but i am in bad move every night when she works... she was also "snapping" with her ex (who,btw,cheated on her) even when i told her that its bothering me but we had huge fight about that, then she blocked him on all social media(finally right?)...

She is my first love in my entire life, we are having great time together, i just dont know why i can not trust her?... I would feel so much better if all those things wouldnt bothering me but they do. She knows im not ok with it but she is still doing it... 
She is more extrovert kind of persone and i am kinda introvert, maybe thats the reason for my "trust" issue. She maybe thinks that thoes guys are only her friends but lets be honest, how many guys texting with a girl without having dirty minds?....
<bot>: My gf is texting to a guy who likes her, it bothers me because i can not trust her although i somehow know she wouldnt cheat on me