Unfortunately Eddie...kids will draw their conclusions from a variety of places: parents, friends, schoolmates, media etc.
You can have two children raised in the exact same manner and they can grow up with different views on different issues...one may have a healthy view of sex, while the other thinks it's something icky and dirty.
You have limited control over that...all YOU can do is set the best example for them that you can. IMPO being openly affectionate in front of your children is showing them that behavior like that is good, acceptable, fun, and part of a loving relationship. Of course being open and honest with them should they ask questions is a great thing as well. I at least knew that "if" I were to ask my folks questions that they would be open with me and tell me the truth. I knew that was true of both of my parents as well.