He fell in over after the first nut?!

So the other day I was just curious and asked my boyfriend if he remembered the exact moment when he fell in love with me. He asked if I wanted an completely honest answer or a better version of the completely honest version, so obviously I said I wanted the completely honest version. He said I knew I loved you after the first nut, like the first time we had sex and right after I came I knew I loved you. I just laughed because I was expecting something sweet but he came out with that. Lmao it didn't bother me though because I know he's not the romantic type haba. Like has anyone else ever been told this before or something similar? What's your story? Is this a normal answer from a guy or am I taking it too good when I should really be offended?