✔ 最佳答案
You should use a condom for anal, vaginal and oral sex if you are unsure of your partner. Also, condoms don't prevent ALL STDs some are transferred by skin contact such as HPV and various types of lice. As well, you should use finger condoms if you have cuts or scratches on your fingers and always change condoms when going from vaginal to anal or vice verse. The only safe sex is not having any until marriage. Sad but true.