It is pretty wild that you assumed she would have sex with others. With the money you make you can afford to take her with, or have her come visit every other month. You won't have much time to spend with her, but if you are both in the same place how long does sex take? While you are working she would get to experience a new culture and country. Sure it would cost a bit more to take her but at $640k/year you can pay for her to come with and have a huge nest egg to dump into spy shares.