Perhaps, but we know that he said “men and brethren, I am a Pharisee, the son of a Pharisee” (Acts 23:6) and that Pharisees were required to get married. Did his wife died? Was she left behind in Jerusalem while he went on his trips?
Were Pharisees required to marry by a certain age? We don’t know how old St. Paul was when he had his conversion experience. It’s possible that he was very young at that time and planning to marry when he got a little older, but that his conversion caused him to drop those plans in order to devote himself entirely to spreading the gospel.