Husband thinks something is wrong with son

My husband thinks something is wrong with our son because our daughter is 14 and into boys now where our son will be 17 in March and he's still not into girls and he still acts a little childish. He and his best friend still have sleepovers and make blanket forts to play MTG. Maybe I'm weird but I rather my teens be home making blanket forts playing card games than having sex. I'm already getting my daughter in birth control because I'm worried she's gonna try to have sex. So I'm happy I don't have to worry about that with my son. My husband keeps asking if he likes any girls and he just says he's not really interested in all that. Then my husband hurt my feelings talking about what a huge ladies man he was in high school and said I was lucky to lock him down and our son needs to live up to that. Telling me I was lucky to lock him down hurt me. Idk maybe I'm overreacting. He's saying this is a bigger deal than we think because maybe our sin is developmentally behind. Is it that uncommon for a teen to not be interested in dating? He is fine in other ways. Does good in school. Has friends and hobbies. He's in the robotics club. How can I convince my husband he's fine?