Deffinatly don't do that. That's just stooping as low as the guy that dumped you by text. So you don't want to be like that but you don't have move on so fast. Just give it time and I'm sure it will get better some time.
I can understand how it doesn't make sense but you will start getting over it and you will won't feel so hurt or angry.
And people don't move on so quickly they say they do but they don't. Take as much time as you need
Hope all goes well