The brand Roseonly claims it only allows each customer to order flowers for the same person in their lifetime. Provided to China Daily

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"My girlfriend was very touched when she received the flowers. It confirmed that she is the one for me, and I am the one for her," Qi says.

Whenever a client wants to make an order, the buyer has to fill in a name on the website stipulating whom the flower gift should be sent to. Whenever the name is input, it is saved in the brand's database and it's not allowed to change.

Pu says many clients have come to regret their first order. He says people find excuses, like they input the names by mistake. There was once a man who called and asked to order flowers for a different person. The man said he "accidentally" gave the name of his mother the last time when he bought flowers.

"The only way you may order for your mother is to buy under your father's name," Pu says.

The 33-year-old flower dealer says Roseonly's success proves "people still believe in true love".

"In the fast-paced society, we can still see so many people believe there is only one in their life," he says.

However, true love comes with a high price tag.

All of Roseonly's flowers are imported from Ecuador. "Forever Love", a bunch of 12 roses, costs 999 yuan ($165), and "Classical", a flower box of 18 roses, is priced at 1,314 yuan. A specially preserved fresh rose, individually decorated with Swarovski crystals, is 520 yuan.

Pu says though China has a huge flower market, there is not a well-established flower brand at present. He aims to develop Roseonly to be something like the "Hermes" of flowers, or "Tiffany" of roses.

Pu says he plans to develop more products for "only" lovers under the brand Roseonly, such as perfumes and underwear.