texting talker

1.- A person who writes a lot on chat with people but doesn't necessarily mean that talks a lot by phone or in person. Usually he or she doesn't.

2.- A sociable person only online (most of the times).

Ex:

Victoria: Sean is always so quiet in class.

Sarah: Yesterday, We were chatting a lot but he barely said Hi today.

Victoria: He is a texting talker for sure.