I don’t think it was right of him to text it like that. He should have told the shadchan. However, I don’t know the full story. He didn’t want to answer her phone calls, or he was just busy? Maybe something happened and he wasn’t able to pick up the phone whenever she called. Even if he was deliberately not answering her, he still should have gone to the shadchan (and if he really was yeshivish, he wouldn’t have ended it that way. He would have gone to his rebbe who most probably would not have told him to text it.)
