My boyfriend was laughing because he is happy?

It was pretty awkward so id like to have opinion from males lol

We went to bed and already said good night when i suddenly hear him laugh/giggle

I asked :are you laughing or crying?

He said:Im laughing, just random laughter... because im happy. Finally in these past days im happy.

I kissed him and went to sleep

But still have no idea

Why would you laugh in the middle of the night... because you feel happy?

Can someone explaine please?

My boyfriend was laughing because he is happy?
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