If You Were in His Shoes, What Would You Do?

I traveled to UK in 2003 to study Medicine and Surgery, at a top UK university. While I was in first year, I met this British born Nigerian girl; she is from a very wealthy family. The girl is full of intelligence; she graduated as the best medical student.
After our graduation, she asked which area I would like to specialise. I told her, I just want to be a GP, and work in any small General Practice office in London. As for her, she wanted to be a Surgeon or Anaesthesiologist. We pursued our aspirations, and now she is indeed a Surgeon and I work as a GP in a local GP Medical centre.

Since two years ago, our relationship has been going town hill, my GF does not do normal things she use to do to look prettier; She has stopped doing her hair, she is always at the hospital, and she has put on weight a lot because she stopped exercising. I even spent £2,000 to install all sorts of gym equipments in a spare room at our house, yet she won’t exercise.

Here is where the story got awkward; five months ago, I was at my office a Brazilian single mum came in with her daughter. Her beauty is incomparable. Her ass is something from outside this planet. I checked her daughter and found out she had influenza, after prescribing medications for her; I could not control myself, I asked the lady for her number.

We started texting each other, she told me she is a divorcee, and she also has no job. Her sources of income are jobseekers allowance and child benefit. Yet, I found myself felling for her. She has learnt how to cook Nigerian Soup via Youtube just to impress me.

I am confused. At the moment, I love the Brazilian girl, but she has no career. My girlfriend has a career but she doesn’t know how to cook, and she is not half pretty as the Brazilian girl. If I were to brake-up with my girlfriend, we will surely have a legal battle on who would have a lion share over our £550,000 house. But the property is not what bothers me at the moment, my happiness is most paramount. This Brazilian girl is bomb.

Attached here is the back view picture of the Brazilian girl; she took this photo when she went to her country on a holiday. I sent the photo on a UK based blog requesting for an advice, people were busy downloading and uploading the photo on their facebook instead of giving me an advice.

Based on our ages, i am 29years old; my gf is 27 years old. The Brazilian lady is 30 years old. What would you do if you were in by situation?