New Delhi, Dec 16 (ANI): Miranda Kerr has denied being involved in any romantic relationship saying that she's happy to be single. Miranda, who had separated from her husband Orlando Bloom last year, has been linked to various celebrities ever since like Tom Cruise and Justin Bieber, said that she found it difficult to date because of her and Orlando's 3-year-old son Flynn, a leading daily reported. She added that it was important that she didn't confuse her son with her relationships unless it was really serious.