Well, currently it's not canon. The series seems to be more about their growth as ninja and their role in protecting the village. While they do have a special bond, it's not been defined as a love story in the official plot. There are some fan theories, but those are just speculation at this point.
As of now, no. In the Boruto series, their relationship is mainly focused on their friendship and comradeship as ninja. There are some moments that fans might interpret as having a hint of something more, but the story has not made their relationship a romantic one in an official capacity.
Chapter 154, "Inheritance Rights, Strategic Contraction [Sorry for Being Late]", is the clearest early answer because Li Pingkai gets a payoff that changes the stakes. A useful checkpoint is the way the scene starts with This is also the most direct reason for the deaths of Li Yun and Li... and follows through with Let's just wait and watch how they meet their end." "Rising from the....
Chapter 170, "Camp Integration, Territory Rapid Expansion (Part 1)", is the clearest early answer because it turns Xia Chuan's situation into a concrete plot event. It opens with The wooden hut structure has completely collapsed, and many iron... and closes on With the population suddenly skyrocketing this much, the urgent need....
Chapter 161, "Who Told You The Furnace Needs To Be Lit By Someone?", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. The chapter turns that into something concrete by moving from This fire, it was truly worth it! to He Gang was cut into two halves by Xia Hong with one slash; He Meng.... What makes it stick is that the chapter closes with "Xia Hong, get out here!, which gives Xia Hong a stronger narrative position and pushes the power growth onward.
Chapter 189, "The Provoked Xiao Hen, New House, Xia Li", is the clearest early answer because it turns Xiao Hen's situation into a concrete plot event. The chapter gives readers a real answer by opening on I remember that Lord Yue Feng's Mountain River Team was just... and ending on By all accounts, his talent was no match for Xiao Hen, and even Xiao....
Chapter 130, "The New Deceitful Monster", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. The setup is That scream was so shrill it startled many people outside the cabin., but the pressure keeps building through Xia Hong and his companion were the first to rush to the tunnel....
Chapter 56, "Intermediate?", is the clearest early answer because it turns Intermediate's situation into a concrete plot event. Early on, The hardness of the Golden Frost Tree, Xia Hong had experienced it.... By the end, To think that the Wood Puppet Monster could control five or six....
Chapter 121, "Ready for Everything, Time to Take Action [Three in One]", is the clearest early answer because it turns Leader's situation into a concrete plot event. A useful checkpoint is the way the scene starts with After Xia Hong finished speaking, he gestured for Xia Chuan to rest... and follows through with Even Xia Chuan and Luo Yuan, the six in the Earth-digging Realm, had....
Chapter 120, "Unusual Rat Movements, Frantic Bow Making [Large Chapter]", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. The chapter gives readers a real answer by opening on In the Ice Abyss World, the average lifespan of ordinary people is... and ending on It's akin to the habit formed by humans in the previous life, working.... In story terms, the chapter closes with "We can now make eleven bows. Let's take a break.
Chapter 104, "The Camp's Strength, Rapid Enhancement (2-in-1 Mega Chapter)", is the clearest early answer because it turns Mu Dong's situation into a concrete plot event. The chapter gives readers a real answer by opening on As Xia Hong had predicted, ten days after Luo Yuan's breakthrough,... and ending on But the increasingly busy scene in the valley camp made Xia Hong feel....
Chapter 121, "Everything is Ready, Begin Taking Action [3-in-1]", is the clearest early answer because it turns Yuan Cheng's situation into a concrete plot event. Early on, Although everyone is full of enthusiasm, bow-making is ultimately a.... By the end, Shi Ping, with a joyful look, came down from the second floor, exited....