My girlfriend(28F) earns way more than me(29M). How can I handle it in the relationship?

My girlfriend and I have been together for 3 years and she just told me she bought a house in our hometown. She said she was able to buy it with no trouble at all because of her income. I am in awe and a bit embarrassed about the whole thing because I am going through very tight financial pressures right now. I am very proud of her but also feel like I am in way too much financial trouble to even think about proposing to her this year. I want to spend the rest of my life with her but this new information has me feeling like I am not the man I should be in this relationship. How should I handle this?