Yes. Some guys try to pressure their girlfriends to have sex, saying that it will make them closer. In the right context, sex can deepen the relationship. In a committed marriage between a man and a woman, sex creates intimacy and a close bond.
Sex outside of marriage cheapens it, and can often lead to heartbreak and fractured relationships. Not only can you have a good relationship apart from sex, but abstinence is the best way to protect the relationship you have. When you wait to have sex it makes both the relationship and the sexual act special and meaningful.
Companionship, friendship, doing fun activities together, problem-solving, and spending time with family or bigger groups are all wonderful ways to keep your relationship rich apart from physical intimacy.