Okay well me and this guy have been seeing each other for a month now, we have taken things slow and not labeled ourselves yet, but it's a relationship. However the thing is well we always talk and generally we give each other advice on anything if needed we talk just to talk and stuff too. Well the thing is his ex fiancé is visiting here from where she moved to, and he texted me saying that she messaged him on fb telling him she is here and he doesn't want to see her, and added because he is kind of nervous any old feelings would come back, and he doesn't want that because she has a boyfriend she is happy with. I told him that the feelings wouldn't come back if they have both moved on and gave him an example from my own experience and he said wow that's sucks, because my experience is I work with my ex boyfriend... So pretty much I am wondering if I should be concerned that he isn't over her... it has been six months since they broke up and clearly she is moved on... but if he isn't fully over her is it worth it for me to contiue seeing him. Im confused on whether I should ask him like if he is, or if he is ready for a new relationship. I don't know what to do :( any help would be great thanks!

It is a possibility that he isn't over her so it could be safe to tread lightly. Just continue to take it slow because unless he's totally honest with you about it you'll never know how far along he is with moving on. It all boils down to the trust you have for him.