Guys, is he talking about a new girl?
What Guys Said 1
I do not have enough information to determine that. Can you tell us more about how he is conducting himself and why you are suspicious?
Also, you referred to him as your EX, what exactly is your relationship now and why are you concerned if he's talking about girl? Also by "talking about a girl", what do you mean? Do you really mean that him mentioning any female in anyway makes you sick? I am assuming "no", please correct me if that is not the case.
That said, I'd first look into getting control over that physical response. You can avoid getting that worked up over it, I assure you. The initial automatic response passes through the body much more quickly than you'd think. Many techniques for staying calm and releasing that feeling without letting it build up exist. Meditation, breathing exercises, etc.
After that, have a less emotional look at why you care. Are you going to do something about it? If so, do it. If not, accept that you aren't.
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