I just don't see how you can spend 500 hours talking to a chick and not realize that it's a dude. No one who isn't a professional voice actor is that good. I also don't see how you don't find it weird that her "brother" keeps contacting you from her phone.
Further, I don't see how you could believe that in the course of one year this girl who is just out of college took trips to New Zealand, Dubai, Vegas, Hawaii (to your hometown, at that, but conveniently when you had no way of being able to fly home to meet her), had something else going on during every one of your away games that she otherwise would have been able to attend, had her father die, got in a car wreck that left her comatose and snapped out of it right when her family agreed to pull the plug, developed leukemia, and died the day after your beloved grandmother.
I don't see how anyone who isn't a high-functioning mentally-challenged person could not see red flags at every turn.