Gosh, it is not weird to fall in love on the internet.
Scientifically, it was found out people fall in love easily on the net because they get to talk and express their feeling better rather than being nervous, shy etc etc.
You can check in google
but LDR is just hard to maintain and is not successful always.
My accounting teacher got married to an internet guy and she is having a 6 year old kid from him now.