OK, so FI's dad is hosting the rehearsal dinner and wants me to introduce/point out my family, and FI is doing the same.I've got 3 sisters and a brother I grew up with, plus a bonus brother. My mom gave him up for adoption in 1959 when she was 19. They reconnected 5 years ago, and have seen each other a handful of times.BB and I have developed a nice relationship b/c he lives in CO near FI's family, but of course it's different than the one I had with my brother I grew up with.I know my brother feels jealous and threatened by BB. He's avoided meeting him, so the RD will be their first meeting.How to I do the introductions? Do I introduce him as my brother? Or will that hurt my other brother? Do I introduce him as a bonus brother? My mother's bastard son? Any thoughts? WWYD?