Why would he uninvite me to 1 party and invite me to another?

So this guy and I have been talking for a month. Recently we got into it and it's sort of give him the ick for me. Somehow though he still wants to try. So until yesterday I was invited to one of his close friend's party. Then we got into an argument and now I have been uninvited. But he's still inviting me to this OTHER friends party. This friend is someone he has met through his side tutoring gig. Oh and this is also after he mentioned he didn't want to go to her party at all yesterday. Why would he uninvite me to one and keep the other one?

Updates
1 y
We didn't end up going to either. He mentioned going to his other friends and well I mean we did spend the rest of the day together but he didn't even mention until late at night, "like oh yeah we're not going."
Why would he uninvite me to 1 party and invite me to another?
Post Opinion