Search Results: boyfriend treats me like a sister

So a few years ago my friend got a new boyfriend. But he always ignored her, flirts with other girls. ( including me) and even cheated on her with another chick. He pretends she isn't even there and always talks to other girls. I told her about him moving on but he fucking cheated on her for Pete's sake! I didn't want to tell her like that because she was already depressed and stuff. my little sister asked me why I didn't tell her everything about what he did, I didn't because I didn't want her to go crazy. he basically treated her like trash. I just didn't wanna keep it real with her and be blunt and honest about it.

My boyfriend went to a party and he told me straight forward that he did not want me with him and told me to stay with his sisters while looking at him so that he could dance and have fun with his friends. He only does this once a year but this was the first time that he did this. we have been together for 3 years and we are always together 24/7 so naturally i felt really hurt with this behaviour.
When later i asked him why he did that he did not feel sorry at all even though he saw me hurt nearly about to cry. He just told me that no one had his girlfriend with him and he did not want to be left out.
I feel really hurt and so angry at him cos usually he treats me like a queen and unlike his friends he never ever leave me alone.. Until this time. I always let him do his thing and never tell him not to go out with his friends but this part seemed different as i was actually there looking at him cos he was the one that told me to go.

Am i allowed to feel angry with him? Or am i just selfish and egoistic?
What should i do?