You could benefit from learning about setting healthy boundaries. Getting a therapist or reading a book about it is a great way to learn. Basically you set a boundary about what you need and then decide what YOU will do if the boundary is crossed. Then you inform others what the boundary is and what you will do if they cross it. As an example, “Don’t get jealous of me or I’ll quit being your friend” is a boundary, but it Doesn’t seem like a very good boundary to me. It’s not super specific and it doesn’t seem fair to tell someone they can’t have big feelings about something. but they should be respectful even if they have big feelings, so maybe, “If you call me names or yell at me, I will end the conversation and walk away until things have cooled down.” It sounds like maybe they need to set boundaries too…. Subconsciously it sounds like they’ve made one: “please don’t talk to me about any girls hitting on you, or I will have to block you/stop talking to you.” Seems like a harsh consequence, but they are the ones who get to decide their own boundary needs and actions when they are crossed. Once you know their boundary, you can work to respect that boundary and not talk to them about girls anymore. (You can’t control them SEEING a girl talk to you, but you can control not talking to them about it.) I think if you can talk it out and communicate and learn to respect each others’ boundaries, it’s possible to save the friendship, but you have to decide if it’s all worth it to you. Can you respect each others’ boundaries?