shouldispy

Well, here is my dilemma... I have been dating my girlfriend for about a year and I love her very much and so far have had every reason to trust her... Having said that I don't know if I am so sure now...a few weekends ago while I was at the dropzone an old friend of her's called and said that he would like to get together with her while he was in town the next few weeks...apparently they talked for a while and her cell phone battery went dead and continued the conversation by email I am naturally a pretty jealous person and try my hardest to contain my jealousy...the other day my email was not working so I logged in on hers (we both use the same server) well hers worked and I saw an email from the guy that basically said that there would have to be no strings attached and that they should meet. I have been that guy and I know what he is trying to do... I confronted her with that information and she immediatly expressed her guilt from not telling me about the call and emails. I played it off like I did not care if they met but now I am not so sure. she emailed him a reply last night that maybe they can meet while he is here. This could possibly be explained because she said that she does not like to hurt people. My question is this...given that she emailed him back last night, should I confront her and tell her that I would prefer it if she didn't see/talk to him. Should I totally trust her and ignore my jealousy? Or should I put a keystroke log on MY computer and not say anything? Thank you in advance for reading this (if you did) and I appreciate any responses. I normally post here under a different name...pretty obvious, but I just wanted to say that. So do I