Hey dudes, I have two questions around here about texting.

1) if a girl wishes you good luck, can you reply with a smiley instead of thanks?

2) I sometimes want to tease but it seems too high investment/time eating thing. Now Im kind of busy now so I don’t have much time to talk to the girl, but teasing is good (for emotions)but its bad for me and idk, should I or should I not do it?