<human>: I'm in a strange situation with my girlfriend. We've been emotionally and physically invested in one another for about 10 months and in a loving, monogamous relationship for 5 months. Our relationship feels extremely healthy; I feel as though she's my "teammate" in the otherwise competitive sport of life. We have discussed and recognized that we are both too underdeveloped as individuals and as partners in a relationship to be making commitments of undying lifelong love to one another. 

Yet we're discussing the possibility of getting married. 

We are planning on teaching abroad together. Thing is, couples are only guaranteed joint placements if they are married. She has done a really good job of communicating with me and making sure that I understand that, from her perspective, such a marriage would simply be of convenience. We view it as some legal documentation we sign in order to achieve a definite objective: teaching and traveling abroad together. The legal marriage process would be stripped of the immense cultural orthodoxy to which is is normally fused. No vows. No wedding (definitely a hot picnic date that we call our "wedding." That would be too cute an opportunity to pass up). Neither of us would inform our family and friends. Our relationship would continue to develop along its normal course, independent of the fact that we had signed a piece of paper making us officially "married". Easy peasy, right? 

Now, I'm pretty on-board with the idea but I just cant shake my sense of apprehension. Due to my very limited knowledge of how *marriage works*, I think I'm worried about the unforeseen problems that could crop up down the road. I'm not comfortable talking to any of my family or friends about this. This is where reddit comes in: What sorts of difficulties - legaly and relationshipey - should I be thinking about and preparing for?

Can you condense the text into three sentences or less?
<bot>: Thinking about marrying girlfriend for job benefits, looking for advice on what sorts of future issues to be thinking about and preparing for.