He got a new gf 3 days after he dumped me....is it my fault?

Me and my ex broke up 3 weeks ago exactly.

We were very serious and practically engaged. However, he would always go out with girls who I didn't know and I got a bit jealous about that. This little jealousy turned into huge jealousy, and he broke up with me because I 'didn't trust him'.

Then, he got a new girlfriend 3 days after he broke up with me. It's one of the girls he went out with, who I got jealous of. To make things worse, she is now living with him.

I am not proud of the way I reacted when he told me. I called him, and her, every name under the sun. He said 'this is the reason I didn't want to be with you.'

I blame myself partly though. Is this my fault, and my destructive jealous personality?

i dont wanna pour gasoline on the ring of fire that you've surrounded yourself in...but yeah...your reaction is completely unacceptable, im sorry to say. so what if he goes out with other girls, so what if he broke up with you and picked someone else over you. sorry to say, but your behaviour is completely uncivilised and unladylike, i hate to offend, but im not going to sugar coat it. so what he broke up with you, BIG DEAL, get over it. you're not the only woman in the world, plenty more fish in the sea. i dont get why people get SO worked up when someone isnt fully devoted to them and only to them, its ridiculous to expect that out of a person. its an open relationship. he doesnt want you, he found someone else he wants, you have to accept it, move on and forget about it. find someone who wants you, there's definitely someone out there for you, but its never going to be him so just forget him, you dont need him now. you will find someone better, someone who wants you, someone who will stay with you.