The context of the following conversation is Jan could tell Robin was interested, because he started following around and asking questions about her research.:
Jan says I finished with my research..
The friend responds You have to tell me all about it..
Jan responds sure, I started off by doing field work..
The friend responds This sounds exciting to ne already..
Jan responds Yeah, I can tell that you have a genuine interest..
The friend responds I do! I have  always been fascinated by field work..