My best friend wants me to have her baby 😐

Me and My best friend have been best friends for approximately 4 years. She’s 100% masculine gay and im more on the feminine side but not gay. She expressed to me last night that she is 30 years old and she has no family since her grandma died so she feels alone and how she always wanted to have a kid and know when she dies she will have a piece of her out here somewhere. BUT how people are out here today she just doesn’t see herself settling and going through that with someone who may or may not be genuine about the situation. So last night she asked would i consider having a baby for her, but heres the catch. I want a baby as well and when i mentioned it to her she threw the idea out there like “what about we raise the baby together but still remain as best friend” .. I need some honest opinions here ❗️ help me 😩