That's something I never thought would happen and I don't really know if it's a weird kink she developed or is she trying to test me ?

Few weeks ago, we had a discussion where she learned that my ex sent me nudes (when we were still together). She looked weirdly angry. I told her that this is something couples sometimes do and since it happened before I met her (gf) this is not cheating. She didn't answer and changed the conversation.

Yesterday, when we went to bed, she started teasing me and gave me a handjob. I was really enjoying it till she took her phone, went on my ex Instagram and asked me to look at her in the same time. I closed my eyes while cumming, I didn't wanted to watch her....

After that, she told me that I needed to train for that type of fantasy... (Which I'm currently trying but it's not easy)

What do you think about it?