Public displays of heavy affection are not so common and can be construed as rude behavior.
Thai men and women tend to be shy in social/dating situations and are not known for very aggressive behavior.
It is safe for women to walk alone at night although it is always advisable to walk with a friend.
As in any country, it is highly advisable to practice safe sex and use condoms. has an AIDS rate of 1.5% per 100,000 people.