Current boyfriend situation

mrs.s
Current boyfriend of 2 years recently went through my phone saw a text from my youngest son's father and it stated that he was asking when could we be back together again I didn't respond back to the text message because I felt that it was not necessary to feed into what he was saying current spouse went through my phone about an hour ago and it's been non-stop arguing because I would not text him or call him and tell him to not send those kind of things I felt that responding back was adding fuel to the fire then to just leave it alone was I wrong