Texting is totally Ossur, as it has been assered by all Rabonim in Eretz Yisroel and anybody who argues is not a rav and is a complete Koifer. It is almost as bad as using Internet, and it is Yeharoh VaAl Yavor for boys to text girls. It can lead to mixed dancing and worse, C”V.
Now everybody please shout at me, cos thats probably what the OP wanted. I am happy to shout back.