Builder Chiu Chi-wai's multiple love affairs began when he was a teenager. He pursues the good-looking, as well as the slim and petite. But the objects of his affection are mobile phones.
The 29-year-old has spent 13,000 dollars (1,700 US dollars) on the latest models.
"During the good old days, when I made enough money, I would upgrade my phones every two to three months. My dad and my mum are just as crazy about mobiles as me," he said.
Although the case of Chiu might appear extreme, people like him are not unusual in the former British colony. The city's obsession with the gadgets can be judged from the fact there are more mobile phone lines than people.
Mobile subscriptions reached an all-time high of 7.35 million in March, almost double the four million of 1999, according to government figures in the city of 6.8 million people.
Hong Kong mobile phone ownership is the highest in Asia, with 86 percent of the population owning one or more mobile phones, according to a study by technology research company TNS of 11 Asian telecom markets, including Japan, South Korea, Singapore and Thailand.
TNS found Hong Kongers are more willing to spend money on their next mobile phone than the rest of Asia and are more aware of the advanced technology. These people tend to change their mobiles faster than the rest of Asia, with 36 percent of users planning to buy a new model within 12 months. And nearly 20 percent intend to purchase a new one in six months.
Hong Kong consumers are the most sophisticated group of mobile users in the region. They are pioneers or early adopters of the latest hi-tech gadgets, said Chan Chi-wing, regional director of TNS telecoms and technology.
"Hong Kong has a very open market; it's often seen as a testing ground for new technology," Chan said.
"The Japanese are more entrenched with their own brands, but Hong Kong people are far more acceptable to new technology and different brands and products. That's the uniqueness of Hong Kong."
TNS figures reveal 15 percent of Hong Kong users have two mobile phone numbers or SIM cards (subscriber identity module), a smart card that stores telephone account information and one phone number. Three percent have three or more numbers.
The researcher said more Hong Kong people tend to have multiple handsets and phone numbers compared with the rest of Asia.
A lot of the Hong Kongers use mobiles as a fashion accessory chosen to match the occasion.
"Some people use different handsets for different occasions. When going to parties, they tend to use a more stylish, trendy phones but when they go to work or school, they use a more conservative-looking phones," Chan said.
Chiu juggles three SIM cards, switching between two handsets for "convenience" and for different purposes. One phone number is for work only, one for best friends and one to fend off "unwanted" acquaintances, he said.
"My mobile phones are light, so I can easily clip them on my belt. I used to meet a lot of girls on ICQ (an online instant messenger system), so if I really liked them, I would give them my best number to make sure they could find me."
Hong Kong people are uniquely price conscious, TNS' Chan said. With more people travelling to China for work or to visit relatives, they get around paying expensive international roaming fees by switching between local and Chinese SIM cards, Chan said.
"Hong Kong consumers are really clever; they buy pre-paid phone cards for China, no monthly fee is needed and they can make cheaper calls," Chan said.
"You can often see these people change their SIM cards on the train when they are near the border." he added.
When choosing a phone, Hong Kong people more than other Asians place more value on appearance. Handset manufacturers keen to market mobile phones as a fashion item find a ready audience here.
There are more than 100 types of handsets on sale in Hong Kong and numerous accessories. Flashing colour antennas and hand and neck straps, flash stickers, Winnie the Pooh or Mickey Mouse mobile covers or stylish cases.
"I just enjoy the fun of having different mobile covers and ringtones. Everyone has the same model, how do you identify yourself? - by changing covers and having different ringtones," Chiu said.
Despite their popularity, Chan said the mobile phone market has reached saturation point and is unlikely to grow further. Nurse Lydia Chan, 34-year-old who was once a mobile enthusiast, is tiring of her one-time passion.
"I've changed as I get older. I'd rather spend money on travelling than on the latest models of mobile phones that cost hundreds of dollars. They are only trends and don't last forever," she said.