I’m so embedded!What do you think?

So it happened about an hour ago and I I’m in shock.So my childhood bestie(boy) who is my neighbor, texted me.Before the story I have to tell you that I’m 17 and he is 21.We haven’t talked for some years, and we only started texting some months ago.He only send me a basic How are you?or something message about every week, and we only talked about general thing like about his new car etc.So what happened me this afternoons I just can’t believe it.First I hoped that he was only joking, but now I feel like he isn’t because we aren’t close as we were 10 years ago.I translated the messages to English because they were written in Hungarian.So my question is:What I should do, think?Now I remember that once he asked me if I don’t want to drink with him after I failed my drivers test because he has a half bottle of J.Daniels.Or he asked me if I would like to watch something at him.But these weren’t that strange for me.I don’t know how I will look at him after this.I can’t look out the window to see their house or his car.Oh and have I mentioned that he has a girlfriend and in both of their fb profile pictures they are together, hugging?