Please a need a seriously urgent relationship advice

please i apologies for my English if you find any wrong spellings My Girlfriend broke up with me, we have be in serious relationship for 1 year 7 months, some months back she told me she was not feeling the love she had for me and she needed time to figure it out and i agreed to that tow days later i manipulated by using a female facebook to chat to my self so she can be jealous because she had my facebook password which actually work, she was jealous and told me how much she love me. sometime last week i notice she was now hanging out with this guy because the guy like her and want to date her, i called it to her attention by telling how what i found the she told me it true and for the past 5 to 6 months she still has not feel the love because of distance and she wanted to break up after some arguments she said we should give it another try to see if we can work things out, two days later i made a mistake be going to find out what was going on between her and the other guy, i used the same facebook i used in manipulating my Girlfriend to chat with the guy to find out what is going on, and this guy told me girlfriend what i was doing, and she called me to tell her the truth, i had to tell her everything and also told her it was the same facebook i used to manipulate her and that i am sorry, and she cried and ask for break up that she cant continue with this anymore, i was so heartbroken that i try to make her change her mind to forgive and forget but she already made up her mind, and now we agreed that we can be friends and start up to know each other again and i will have to make her to forgive me by being friends with her and trying to prove that i am the one she want, but now i have competitors because she now likes the other guy and might decide to go with the guy. even after our break up she called me on Skype few hours later at 5am and told me she don’t know why she cant sleep and asked me if i was okay.. but then that night i came across an article on how to get you gf back i follow the first process which was no contact, i was able to succeed on one week of no contact i could not handle it and i had to speak to her but then she had message me severally because she thought i was missing and i did not reply her texts when i speak to her she told me she was shocked that i called her because she thought i moved on then she had no choice to to move on also and now she said she wont like to me that she is now into the other guy that they both likes each other so much that she think she might have to follow the other guy because she moved on and i should move on too and she said but if i think i can still win her over by loving me again then i should give it a try but her advice will be i should move on so i wont get hurt anymore now my problem is i don't know what to do now i really love her and really want to spend the rest of my life with her i feel somehow that since she is into this guy i made lose out on her and the other side of me feel i can do it. even when i text or call her i don't know what to say because i don't want to make any mistake that will make her leave forever please i need your help on how to go about this because i love her so much that i will want her back in my life and for her to love me again she is the one girl i want to get married. thanks

I'm sorry, but my guess is that there is no way to make this right and date her again. If you really want to give it one last try, leave the other guy out. Instead figure out what went wrong between the two of you, what part of it was your fault, and fix it.