[Porn] doesn't excite me anymore. Am I in love?

Little backstory.

I've never been in love with someone. But a year ago I met a girl on the internet (in video game actually) and we've became close internet-friends/lovers. In this January I finally visited her (she lives in another country right now, because of work) and we've had the most amazing two weeks together. We've got even more attached and now it's really hard to be apart from each other for both of us.

So, anyway. When I want to jerk off I can only get hard when I'm thinking about her or specifically about our sex sessions. I can find the most passionate and engaging porn out there but my dick would stay flaccid if she is not in my mind.

So did I fall in love with her? Have you guys had similar situations?