No. That is a sign that Dean is happy! They are called... "Emojis?" Dean is just happy to have a new friend!
Dean uses Dean's tablet, but... Dean can not read. The nice lady on the tablet speaks things out to Dean.
Uhm... Yes? Dean does not know all of things that go on here in, uh... That way? We are all just friendly and give others what they want or need. Sorry, Dean is not very good at explaining things.. :(