I would neuter the male now, that way you eliminate the issue.
As far as Maltese coats, I would be over at maltesetalk.com and asking the experts. I've had three Maltese, and none of them ever developed a silk coat so I don't have a good answer for you.
__________________ Life is merrier with a Yorkshire Terrier! Jezebel  & Chuy ... RIP: Barkley  Loosie & Sassy  |