A lot of times, he is very rude. Sometimes, I just walk away and he says stuff as I leave, such as "Ok Byeeeeeee" in a snarky tone. Other times, he will joke with me, and he will look at me and laugh. Originally, we were a big friend group but I noticed he started distancing himself from me and my boyfriend. My boyfriend tells me he doesn't hate me, but I don't know anymore. Some of my friends say that he is jealous? What's going on?