Small context: this is my first relationship ever (early 20s F) while my partner has been in several before me from casual to long-term but has never done poly before (though always wanted to)

I only have one partner (I'm not actually interested in poly for myself) but I always thought I would be ambivalent toward the idea of polyamory if someone I was with wanted it, but I find that generally when they talk about doing things with other people (sex or kissing or whatever) it doesn't make me feel particularly bad- or at least typically not for long (like I'll feel weird for a couple minutes being told "oh I kissed someone at a party" and then that feeling will go away)- but when they tell me *who* specifically that person was it suddenly feels like way too much info and makes me feel pretty panicky.

To be honest, I don't even really like knowing any details about exes either (like obv I know they exist, that the person I'm with had fulfilling relationships before meeting me, but knowing who they are makes me uncomfortable- esp since I know details about their lives), even knowing full well they aren't seeing them in that way anymore.

Is it normal not to want to know any details about who people are? I'm not sure if this is DADT, like I know that these other relationships happen, I just don't want to know who with. It simultaneously makes me feel intrusive (I shouldn't know things about other people's relationships) and just like generally bad about myself.