Lady Gaga and Taylor Kinney had a very awkward meet cute!

Los Angeles- Lady Gaga slapped Taylor Kinney when he kissed her for the first time.

The 29-year-old singer met the Chicago Fire star when he starred in the video for her 2011 single You and I and he caught her off guard with an unscripted lip lock, prompting her surprised reaction.

Here's the video ICYMI:

Taylor recalled: "I remember I went up, and we're rolling, and I kissed her and she didn't expect it.

"They cut, and she slapped me. And it was just awkward. And the next take, I just did it again and then she didn't slap me. She didn't slap me then. We had a good time."

Despite the "awkward" incident, the 35-year-old actor believes he and his now-fiancee had "chemistry" from their first meeting, revealing they started dating soon afterwards.

Speaking on Watch What Happens Live, he said: "I think there was chemistry. It was a late shoot. We were shooting until four or five in the morning. We exchanged information. A few weeks went by and we kept in touch and then that's that."

The couple got engaged in February this year but haven't started planning their wedding or even set a date yet.

Taylor said: "We're so busy. We've been engaged for less than a year. So, we've been talking about whether it's New York, Los Angeles, destination place so we don't have an exact date yet."

Watch Taylor gush about his bride-to-be here: