Few days ago had oral sex with someone whos i met at the friends party, after couple days he told me that his HIV poz., and when i told him why he didnt tell me before he said we didnt do anything risky so i dont need to worry about it, we just cuddle and kiss, and some blow jobs, but i felt some pre-*** in my mouth, but no seman in mouth at all, how risky was that? or do i still at risk ?