Hands touching, basically?

we where having a normal conversation when i suddenly laugh about some kind of thing he said. I drop my hand my accident. And our fingers meet. then we does something with my hand which i respond with the same intensity, but like increasing it. one thing led to another, long story short we are making out. My question is: wtf just happened. more politely: some insights about similar experiences?
Hands touching, basically?
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