Who initiated the kiss?

This is a silly question. I had already asked, but almost every comment  was asking why does it matter? It really doesn't, but I was just curious so if you want to answer the question, please do. If not, just skip the post.

He leaned in first, but I kissed him. Who initiated the kiss?

I'm just a girl overthinking about a first kiss with a guy and if he likes me, is all.