Whilst I was away, our texting became shorter. I reached out, yet we both took hours to respond to each other. I told him I was back and he told me that she hoped I had a good trip and that was it. Being passive aggressive, I ignored him for 9 days or so.
He then suddenly, messaged me again the other day asking how my trip was, I told him and asked how he has been. In which she then didn't reply.