So recently, I joined this new band. They sound awesome, have a weekly gig at minimum, are totally dedicated... it's awesome. But I was with this other band before, and they knew I was joining to try and get out into music as much as possible, because music is such a big part of my life. Well, I hear from a friend that this old band has practice. No one notified me. I talk to my friend in the band. Here's his response: "Well, you joined this other band. You're obviously not dedicated enough to our band." Because being in two bands is a superhuman feat impossible for any mere mortal such as myself. So they tell me they have a new bassist. It's the guitarist's younger brother. He knows nothing about bass, but is the only person they know aside from me who owns a bass. Okay, whatever. So I give them my "best of luck, hope it works" speech. So I get a text from the guitarist. "Can you teach someone how to play bass?" I knew exactly where this was going. They want me, their former bassist, to teach their new bassist how to play because he doesn't know how. It's not a matter of "Can I do it?" because I know exactly what kind of bassist they need. So my dilemma: Do I help? These guys were pretty close friends (one was, still is, and will be my best friend despite what happens here) but I feel pretty disrespected by what they did. I don't wanna be a jerk and say "F**k off" but that's really what I'm tempted to do. Advice?