[joeyj]

What is your future plans with her? I mean, you're probably just going to have a fling, then eventually leave Japan and you're going to leave her behind... and I am yet to meet a girl that doesn't have some kind of mental issue that had sex with an older guy when they were young. And what if you accidentally get her pregnant?

I'd just find someone more closer to your age, its better for her probably down the future.