Beware... Your partner may not know he/she has an STD - you could become infected.
Beware... Your partner may not tell the truth about their sexual past.
Beware... You can have an STD with no symptoms; but still be contagious.
Beware... 30-50 different kinds of STDs exist, 25 of which occur commonly.
Beware... You should see a doctor if you or your partner has had sex with more than one person.