If he mentions his ex over the phone and says things ended well but his ex was his sister's best friend is that a red flag?

[Fluffygoldie]

Is he not over her yet?

[SnowedIn]

Weird that he mentions her. Not red flag but weird.

The red flag is the sisters friend part. That tells me he has no sense of boundaries.

[OlderAndWiser]

How long have you been dating?

[Screenwriter]

You said "mentions." Unless he's talking about her all the time, I don't see any reason to be worried. You are dating him, not his sister.

[slatyb]

Is he still seeing her alone!

[Fluffygoldie]

No he broke up with her in January and he has been talking with me for about a month and a half now. We call often and he's flirty and nice to me but I don't know why he talked a little bit about her today