You need to talk to Lexa. I know you feel bad about what you did, but she doesn't know that. I can tell her til I'm blue in the face, but she needs to hear it from you.
I also don't think Murphy feels like one of us. What even is us? It's like you guys never came down. Raven has a whole life she's lived. And I don't know what you guys went through up in space for the past six years. Maybe I'm the one who feels like I'm not one of you.