Dreaming of intercourse is a positive sign as per dream meaning and interpretation. Dreams of intercourse means you will have your desires fulfilled related to opposite sex. It also means your mind is not under control and you need to keep your passions in control to avoid troubles. Dream of intercourse and you know the person means positive development in a relationship.
Dream of intercourse with a stranger means you are going to face emotional problems and relationship issues. Someone whom you trusted might cheat on you.
A married person seeing the dream of intercourse means you are going to cheat your spouse or your spouse is cheating on you. It is also an indication that you are not happy with your married life. You need to find ways to settle this.
Dream of intercourse usually has no meaning as majority of time it is due to some intense activity based on the subject during daytime. Constant thinking of intercourse or romance during daytime and then dreaming about it has no meaning.