<human>: Been seeing this guy for about 3 months now. We are not dating, but we are more than friends. We have gone out on multiple dates, talk on a regular basis, hangout a few times a week and so on.

He invited me out with some of his friends the other day and I accepted the invitation. However, it seemed as if it was like I wasn't even there to him. He barely talked to me or acknowledged me.

Luckily, some of my friends showed up later on in the night and we all went to a get together at a friends house. He ended up getting a ride from another girl instead of going with me and at the party he still didn't talk to me.

I ended up leaving after about 10 minutes after without telling anyone. Now him and my friends are mad at me for not saying anything to them and I feel like an asshole.

I know I should have mentioned I was going to leave but at the same time, I was just annoyed and didn't want to get blasted with questions about 'why are you leaving?' 'whats wrong?' 'are you mad?'

Not sure if I'm the one being an asshole or do I have a right to be mad for the way he acted.

Can you summarize the given text in a few sentences?
<bot>: Talking to a guy for few months, went out with his friends last night, barely acknowledged I was there. Left early without saying anything to anyone. He and my friends are mad at me.