After dropping the "Listen, there's something I didn’t tell you." line you are going to have a very hard time framing it as anything else but shortcoming. A mu

After dropping the "Listen, there's something I didn’t tell you." line you are going to have a very hard time framing it as anything else but shortcoming. A much better way to say it (if you have to say it) would be to talk about traveling and casually mention it.