How to say the opening remarks of English short messages?

1. Hey, long time no see. Me too, haha, and you?

The first sentence means: Hey, long time no see. This sentence is used to say hello, meaning "hey, I haven't contacted you for a while." The meaning of. Me too, haha, and you? This sentence is to answer your question "How are you doing?" I'm still the same, haha, and you?

2. Oh, what are we doing?

This sentence corresponds to the part where you dreamed about him. The answer "Ooo" means to express surprise or exclamation. What are we doing? You can see that he used the past tense, which means what did we do in your dream?

I hope I can help you. Have a nice day! :-D