Curly cyclamen

I’ve had this little cyclamen on my window sill for several months. I’m not sure where I got it but the hand written label says ‘indoor cyclamen’. It’s often puzzled me what the difference is between an indoor and outdoor cyclamen. Some people I’ve asked have said they’re the same while others say they’re different. Well, this one is definitely different in that it has a frilly flower that I’ve not seen on any of the cyclamens I’ve had before.