Is there a text app that doesn't appear on your bill or has there number?

I'm 20 and prent blocked this guy that i dated an the mde us break up an not see each other. Then they found out we were still talking so they blocked his number off my phone. So need a app that doesn't show up on bill or a number or his. Also doesn't use much data. I have Iphone

Try Facebook Messenger, it works the same as an SMS but uses facebook.

There are many apps I recommend pinger because it does not allow tracing and google talk. (Google talk gives you a number and allows you to talk and text via VoIP)

I know this because I had a 3GS and when I landed it to my sister I made sure she did not waste my minutes. Also data it did not show as well. I was using gophone