Lady Gaga and Taylor Kinney aren't married yet, but are they already having issues about their future?

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On Tuesday, Hollywood Life reported that the couple have been having problems ever since they put a ring on it. It appears that they've lost some of that spark when the real world hit them.

"Gaga and Taylor just got engaged but they have been fighting like cats and dogs," a source said. "If anything it seems like the engagement made things more tense in their relationship."

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One of the main reasons why the pop star and her fiance might be having trouble is because they each could have different plans for when they want to have children. Gaga may want to have kids sooner than her future husband.

"They are both very committed to work and extremely busy, and that worries Gaga. She realized more and more she is ready to have kids and wants them to make time for that," the source said. "But Taylor doesn't think he or she are ready for kids yet. They are both still in the prime of their careers and have too much going on."

Kinney might think that it's a better idea to have kids when they're at a time when their jobs aren't in full focus.

"Gaga is always working going one hundred miles an hour," the insider said. "He really doesn't think Gaga is ready for the commitment to be a mom just yet."

Tags: Lady Gaga Taylor Kinney