My gf just told me that she had a guy coming to her work to meet her after work. She mentioned something about this a month ago about talking to this guy online. I said to her that I talked to people online and I understand that people will be interested in others. She told me that she might meet him someday, but I didn't think she was serious. I didn't tell her not to meet him or anything, It kinda does bother me a little, especially since she was quite easy for me to sleep with. Should I say nothing at all to her and let it go, or should I say something to her? I'm not going to show up at her work and cause a scene, I know there are many fish in the sea. Wondering how to handle this.