<human>: So we had a good time and all, for a first date any then I got home and told my little brother about it. However, it seems that he has some previous with this girl.

He claims she messed him about and spread stuff about him, and that she's using me to get back at him. He claims that she was "indirectly messaging" him i.e. she was posting stuff on social networks which he thinks are aimed at him but don't actually mention him. And basically he is really annoyed at me, wants me to end it as soon as possible.

Some points to consider.... He was the one who stopped talking to her, they weren't even a proper thing in the first place... He has developed a tendency to be paranoid over the past year (I won't explain why)... He has said a lot about how she's bad news, without actually providing any hard evidence that this is the case (such as social media posts explicitly sent to him, or mentioning him).

From what I've guaged from her, she seems to be nice enough, and barely mentions the little brother in chat (she claims she does know him). I don't know what to do - I enjoyed the first date, but obviously if there is a big problem then it is best found as soon as possible. However, I don't feel there is a problem. My gut is telling me that he is talking nonsense with the accusations about her, and that I should continue on as normal and if I did find she was messing him about, then stop then.

So yeah, how should I go about this? Should I stop seeing her as soon as possible? Should I ride it out and see what happens?

I am sure to have missed something out somewhere, but it's late here and I figured I would put out some feelers as it were.

Condense the text into a few key points
<bot>: Started seeing a girl, turns out she may have some previous with my little brother who has told me to get out and made a number of accusations about her, even though I can't see anything to suggest these are true.