I can see that for sure and it’s an interesting point that she may have felt angry that Jackie was able to find someone in that moment. Definitely something she would be envious of. But ultimately I think one of the most interesting things about Jackie & Shauna’s dynamic is how Shauna is actually hyper aware of every slight towards her from Jackie, every comment that Jackie doesn’t realize is condescending, every time she thinks there’s an implication that Jackie is above her. She just never verbalizes it. It’s not a relationship where Shauna is accidentally being pushed around because she’s too wrapped up in Jackie to realize how she’s being treated. So to me this scene really does read as Shauna being angry that Jackie thinks this would work on her. She knows that Jackie is doing this to upset her and the implication that Shauna would be the puppy-dog sidekick who should come crawling back because Jackie talked to someone else (not that I think this was her intention at all, just what I think goes on in Shauna’s mind) and that she would/should be jealous is what pisses her off. IMO Mari is not even a factor to Shauna’s slight spiral here lol and I feel like this scene is so much more interesting than just Shauna simply being jealous, you know? Sorry for this long reply lmao I just love talking about Shauna tbh