My (f22) boyfriend (m32) wants me to go on a date with his brother, is this normal?

I was sitting next to my dad (68M) on the couch, and my bf (32M) was sitting in a chair across from me and my dad beside him. He nonchalantly blurted out that my dad was very lucky to have such a young wife. I said that yeah my dad was very lucky. He said that he too was very lucky to have such a young and beautiful wife. Then he said "It's in the blood right, because your father also had a young wife." I was very confused and asked what he meant. He repeated "It's in the blood, your dad had a young wife, meaning you'll also have a young husband." I told him that my mom was actually older than my dad, not younger. Then he repeated "Ah I see, it's in the blood because your mom married up (in age), that means you'll also marry up (in age)." I was very confused so I asked him what he meant by "marry up". He repeated "Marry up, as in marry someone older." Again I told him that my mom was older than my dad, so that's not true. He kept repeating this phrase "It's in the blood" and "marrying up" and how it must run in my family, until finally my dad asked "What's going on, what are you talking about?" My bf said "Oh I was just saying that because of our age gap, I have 2 brothers that are younger than me. They're both around your daughter's age. Maybe if we arrange something then they'll also be able to find young wives like me." My dad was very shocked and asked "What, what young wives?!" My bf repeated "Because of the age gap, I have 2 younger brothers that are around your daughter's age. Maybe if we arrange something then they'll also be able to find young wives like me." My dad finally got mad and said "Wtf? No I don't want that! She's not some baby making machine, she's your gf." My bf repeated "Because of the age gap, I have 2 younger brothers that are around your daughter's age. Maybe if we arrange something then they'll also be able to find young wives like me." At this point I was in tears because I didn't know what was going on. My dad tried to hug me and calm me down, but my bf kept repeating that he has 2 younger brothers around my age and that they're single, so maybe if we arrange something then they'll also be able to find young wives like me. He repeated it so many times, and even after my dad kicked him out he kept repeating it. He even tried to walk back into our house but my dad locked the door. I was in tears and very confused, and my dad kept trying to explain to me that my bf said he has 2 younger brothers around my age, and maybe if we arrange something then they'll also be able to find young wives like me.<br><br>I talked with my best friend (f24) about this, and she said that this is weird because usually it's the other way around. Usually if the age gap is big, the man is much older than the woman. But for my parents it's flipped around, my mom is older than my dad. My friend said that maybe my bf was confused and he thought my dad was younger than my mom, not older. I asked her if it's normal to set up your gf with your brothers, and she said no.<br><br>I talked with my other friend (m25) and he also said it's weird. He said that nobody talks like that, and it's not normal. He said usually men want to keep their women all to themselves, they don't want to "share" them with other men. He said maybe my bf was just joking and trying to make conversation, but that it's definitely not normal to suggest setting up your gf with your brothers.<br><br>I asked my dad about my mom's age, and he said she's 70 so she's 2 years older than him. My bf was right, my mom was indeed younger than my dad. I told my dad what my friend's said, and he said that it doesn't matter if my mom is younger or older than him, "sharing" a partner is not normal. He said "I would never in a million years want to 'share' your mom, and I would never want to set you up with anyone else." He also said that he's very confused because usually it's not like this. He said my bf is probably just joking but he doesn't like the joke. He told me not to contact my bf until he calms down.<br><br>I don't know what to think. Is this normal? My best friend's said that it's not normal at all, but I'm not sure.