In one relationship, the man may insist on a Kindle while his wife may use a Nook. For other couples, it’s the persistent BlackBerry or iPhone divide or the old PC versus Mac debate. One partner uses a Zune rather than the near-ubiquitous iPod. Others argue the relative appeal of tablets over laptops.

Technology can draw couples closer. How adorable one pair might look marveling at items in the Apple store together! How lovely to trade books on the Kindle. Isn’t it darling the way they exchange videos of the children on their smartphones? So cute (or nauseating) when couples tweet back and forth or flirt on their partner’s Facebook wall.

But not all couples get along technologically. “My boyfriend, Bill, thinks my cellphone is ridiculous,” said Amy Robinson, 28, who still uses a 1990s-era Nokia. “He makes fun of me all the time: Why do you still have that phone? What’s wrong with you?” Bill Rice, 30, who works at a tech startup, was among the first people to get a Motorola Xoom. When the 4G Android was announced, he counted down the days to its release.

As compatible as a couple may be as friends, lovers and domestic partners, technological incompatibility can be infuriating. Because while couples love each other, they also adore their gadgets. Studies have demonstrated that people develop something akin to love for their cellphones, for example. One study found that young Australians believed “their cellphones were part of them.” In another study, only 1 percent of American college students said that were they to lose their cellphone they “would try to live without one.” The introduction of Siri will probably only exacerbate the already documented tendency to anthropomorphize our clever little electronic companions.

Melody Chalaban, 35, an iPhone user and public relations manager at a software company, and Michael Swain, 35, Android owner and architect, illustrated the Save the Date for their October wedding with the image of an Android robot tossing an Apple logo high into the air. (Which person, if either, emerged the winner is open to interpretation.)