Is it normal to love someone to much

Thats obsession 9/10ths of the law

make her feel like a queen not just saying you want her but showing it too...maybe send her flowers and a note sing a serenade whatever get ideas off the internet if it helps but convince her that going back with you isn't going to be a mistake

So yeah, im not going to comment on your grammar, because this is the INTERNET and who cares? But its always really hard to get over somebody. If there is still hope (honest hope, not, oh she is married NOW but when they get divorced i will have a chance) you should still go for it, be honest with her, and tell her and show her how you feel!
IF there is pretty much no more hope, or if she has moved on, you should too. Breakups are super hard, and even though hope can propel you on for a long time, its often better if you can just accept that its probably never going to work out, and move forward with your life, you will be much happier in the long run( though it can take awhile).

Well, for starters, you can work on your writing/spelling/sentence composition. Here's your question (with a few revisions):

"I love my ex. I'm in love with her. I want to spend the rest of my life with her. However, I messed up, and she left me, for her ex. She tells me she still loves me, but she's afraid of being hurt again. But, I know I won't! I'm crying and quite depressed lately. She won't make up her mind whether or not to date me, or her ex, but I'm still fighting for her. I need to know what to do."

Good luck!

PS, when words fail you (and it seems they do) flowers and chocolate can work!

learn how to give her multiples and she'll be yours