What does it mean when a FWB tells you really personal information? Do they see you as relationship material?

Anonymous
So this guy I have known since the start of the school year started hooking up with me several weeks ago. He had been pursing me for a long time, but I waited to see his character. We have hooked up and after we will talk and joke for hours. He has told me a lot of deep information about his personal life and opened up to me. Do you think he sees me as potential girlfriend material one day? Why would he be telling me all this?
What does it mean when a FWB tells you really personal information? Do they see you as relationship material?
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