It is not your concern how their partner contracted HIV.
Not mean to hijack, but I think this is we all should know.
Don't be hijacking another person's thread.
How he knows he's positive?
Hi
What u mean by undetectable? How he knows he's positive?
No it is not possible to contract HIV in that manner.
HIV is transmitted by;
Unprotected penetrative anal and/or vaginal sex
Sharing works with other IV drug users
Mother to child