About that: I’m delighted to still be living in Germany and to be with my husband, but had my American-centric brain fully taken in that he had no interest in living in the US despite having enjoyed his master’s program at Wisconsin, I possibly wouldn’t have gotten seriously involved with him.

Make sure anyone you date more than casually understands your true level of interest in remaining in the US long-term, and earlier in the relationship than you’d think it would make sense.

Financial: your worldwide investments may be taxable while you’re a US resident, and the way non-US mutual funds are taxed is a nightmare. If you have any, you may want to look into selling them before moving. You will then want to consider selling your US-based funds before moving back, depending on how your home country taxes them. Ask a tax advisor based in the country you’re moving to for advice, though.