Good day lovers :
I don't know how to start it, and I don't know how am still alive after all this, I will make this story short as possible. 
I am in a long distance relationship with a girl aged 26 and am 23.I know she is older than me a bit but our love is much stronger than anything.I met her about 5 months, she has diagnosed 2 years ago with lung cancer.but she gets covered. And cancer has returned again 2 months ago.I was soo cool and gentle with her and i make her days better and she always told me I make her forget her illness.we even planned to get married and we used to call each other husband and wife.she gets through chemo and i don't know what stage because she do not want to tell me much about her cancer.one month ago, she told me she is very weak and she throws up a lot, and she told me if I didn't respond you more than 2 days that's mean am dead.i was soo scared and helpless, but am still telling her everything will be alright and I was calming her.and the worse happened.she didn't respond me for one week, and I was soo scared and depressed and I didn't know if she is alive or not,i was crying all day all night and praying for her hopefully God will make her go to heaven.but, of course, i didn't believe she just gone like that.i start to email the nearby hospitals and cancer centers and I was look up in the internet about her phone number and i was trying to find her home address to contact with her family members to let me know what is hapenning, but nothing work's unfortunately, I told two of her friends she is gone, and they didn't accept the truth,the next day she texted us and she said " HI.am I doing well,I hope you are happy, am still fighting with my mom ",I get shock that she still alive and I was soo happy too because my love is fine.i told her how much i missed her this days and i though she is dead.I told her to give me the name of the hospital and her home address. But she told me in an aggressive way that it's not my business to ask for.and she told me she hates that. She told me not to worry about her.but she didn't call me my love or anything that makes her still feel something about me.she just cold inside.I told her what's happened this week why you didn't text me to make sure you are ok.she told me she thinks a lot this week about our relationship and she do not feel love anymore and she wants to be alone.I was confused about what she said, and I didn't expect that from her, i though she said this because she is in chemo.and I asked her again to make sure if she really loves me.she told me " no sorry.I don't love you anymore and go ahead with your life and find another girl " I was going to pass out at that time.my heart just wants to stop beating, I couldn't breathe. I told her friend that she still alive, and he told me he knows, he sent me some screenshots when he spoke to her.the problem is she told him she loves him very much and she can't wait to see him.and she was so happy and she sends him love emojis and kisses.he don't even know her real name even he know her for 5 years .after that he stopped to respond my messages.when i told her why you respond late to me? she said she is very sick and she cant hold the phone.but she lied to me.she was busy to text her friend because he keeps sending me real-time messages.she was calming him and loving him instead of calming me .while me who really truly loves her and i was going to sacrifice about anything in my life just to build a great future with her.she just want to push me away from her.she told me that her mother hate's me because i am the one who is the responsible for her sickness.i don't know why she said that.i still do not have any idea about what exactly happened.
She blocked her Facebook account again .and am still do not know if she is still alive or not

i am so confused my heart still hurt's.I don't know if this is cheating on me? Or she wants to protect me?.  Please help me with some advices