What will i sacrifice?

My friend, Althea, has a crush on Rafael. She asked me about my crush. I told her that my crush is Paulo. One day, she told me that she doesn't like Rafael anymore. Instead, she is attracted to Paulo. I just laugh and listen to her when she is talking about Paulo. In our room, Paulo told me that he likes me. And I like him too. But I also love my friend. What will I sacrifice? Our friendship or my feelings for Paulo?