Know it's hard to tell over facebook, but here are ...

know it's hard to tell over facebook, but here are some examples:

I wrote to her:
Me: Hopefully we could meet again soon this year. I'll admit, I miss that smile of yours
Her: Hey most def. u were always a sweetheart :-)

Another one:
Me: I'll see if I can make to one of the events one day. I'd give u a high 5... if you can reach that high lol.
Her: I would give u a big hug :-) lol
(Never seen her write this to anyone else, unless I'm not looking hard enough)

So what might this be? Flirting or friendly?

(BTW: We liked each other in high school, just hi's and smiles though, but never hooked up)