I have a friend who is travelling to the U.S. and I want to stay in touch by text here in Canada. I have the Canada-wide Talk and Text plan ($20 version-yess!) I just wanted to confirm that I'm not going to be charged extra for texts I send to him and receive from him while he is Stateside.
If your friend's number is a Canadian number, then it is included as part of your plan.
If your friend has a US number, then you need to check if you plan has International texting included. The current ones do include international texting, but I don't know about your $20 plan. If it is included, you can send/receive international texts without charge.
(In general, receiving a text message while in Canada is always free)