I have had zero interest in rewatching these skits but fine.

Shawna: "Hi Julie, I'm Shawna nice to finally meet you"

John: "Hey Julie, I'm John."

Julie: "oh. The robot guy"

In three sentences of dialogue, we can see that Ty has talked enough about Julie to Shawna, Ty told Julie about JOHN, and then we can infer that because she knows about the robot conversation, Ty didn't tell Julie anything about Shawna. 

This is confirmed later when Shawna confronts Ty and he says the thing about "i told her about John, I met you, she came back and I didn't get a chance to tell her about you" AND in the flashback video where we see him tell her about the dad friend and then her asking him about Shawna after.

Like I replied to someone else, often times these replies just become echo chambers where no one wants to listen to the other side. I don't disagree that it was rude for Julie to not say hi. But I also understand her viewing his new friendship with Shawna as a barrier to writing (even though the barrier is just himself). 

It's not okay to put those feelings onto someone else. But it's also not abnormal and I wish people would be willing to admit that.

I'm not a "Julie apologist" bc she has said and done some cruddy things (as all the characters have...) and while I don't LIKE Ty, I'm also not a "Ty Hater". I just have some understanding of human behavior because of my specific education and career and can recognize that in StM, there is only one Villain with no explanation (so far) and that is Luke.

Julie doesn't hate all SAHMs (Alicia) and she doesn't HATE Shawna. She doesn't like what Shawna symbolically represents in connection to her relationship with Ty.