This has a very slight spoiler for Sub-Rosa (1.7), especially for Kibbs fans. But after seeing videos of that special moment, I had an idea. I'm honestly surprised no one else has thought of it yet, or published it.

Anyway, the idea is this occurs when Kate's thrown into Gibbs when the sub goes up. Should be reasonably clear.

He blames it on the sub. That's the only reason it ever happened.

Does he regret it?

No.

They had been going over suspects and the various suspicions they had when the floor took a sharp and sudden dip, sending her body hurtling into his, her hand squarely on his chest. Then her body settled, and her lips came up. Just a bit, but just enough.

He blames it on the fact that his guard was down. He was completely unprepared.

When he felt her lips on his, it took him only a moment to react. His hands, already cautiously placed on her shoulders so she wouldn't get hurt, traveled around until they were holding her to him. His head tilted to get more of her. She tasted so good.

The clincher? He blames it on the fact that she kissed him right back, that she gave her mouth so willingly to him.

When she pulled back for a breath and said, "Wow," he couldn't help but grin and reply with, "That's what they all say." Instead of backing away, she playfully smacked him then brought his lips back down to hers.

Honestly, he shouldn't blame it on anything or anybody but himself. After all, he did fall in love with her.