How do you deal with a clingy person?

[Tofu]

Suppose this person's parents passed away long ago and has anger issues. She befriended me and wanted to converse with me at some time. Then after multiple texts and calls as well as private messages from social media like Facebook and seldomly meeting up with her and friends, she began to hesitantly confess that she likes me, while on the other hand it was obvious for me that she has feelings about me. She then felt awkward afterwards but on the following days, she still kept on posting on my Facebook posts or liking them like what her confession to me did not happen. I just said she is a great friend but I did not reject her directly. I was just lenient the whole time with her but her actions were nonstop and it's frustrating. I already blocked her on my cellphone byt diing it on Facebook might aggravate once she relalizes them. I also do not respond to her replies on Facebook.
*but doing it on Facebook

[Dr Fahad]

Confront him.
Ignore him.
Stop the over-familiarity with him.
Send him direct message from the heart.
Act independently physically , verbally and emotionally