DID he dump me?

Catharine • There are two ways to behave: as if nothing is a miracle...or as if everything is. -Einstein
St. Patrick's day weekend:
Friday he said he felt he should go out. I said yay let's go! And he said no thanks. It's not the same if I have to go alone. 
Saturday he went out with his friends and didn't invite me. He also told me his friends thought it was funny that he messed up with some girl he met at New Years. I said forget it, went out with MY friends, and sent him a couple selfies like don't worry I'm having a great time. 
One of my friends said...he slept with a girl on New Years and was upset that she dumped him? Didn't you meet him on Boxing Day? 
Oh crap. I did. 
Sunday he said he wanted to go somewhere with me. I got in his car and he told me Saturday sucked because his friends were hitting on girls and said he should hit on the hot waitress. He didn't for 3 reasons: she's at work, she's just being nice, she's probably not single. 
I said "none of those reasons were me".
He gave me the silent treatment, drove me home, stared out the front window, unlocked the door at me and refused to talk to me. He didn't text me for three days at which point I blocked him.
Then he private messaged me on whisper harassing me about a post. It was about something else but typical narcissist, he thought it was about him. 
He said he never dumped me, I made that choice. He just "couldn't talk to me right then" because he "can't handle stress"...
If a guy did that to you, would you say he dumped you, or actually keep trying to contact him thinking he just needed space? 
In case I sound stupid I'm really not. But I was married for 8 years and have no idea how dating works now. His excuses seem painfully obvious but....idk. 

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