Hey Guys, looking for a little advice on my issues, if you would be so kind:-)

Summary: went out with HB7 for a year, at first we were both serious about one another, but we began to distance when I found out she hangs out with multiple guys and she suspected I was checking multiple girls. However towards the end she still wanted to meet up for her weekly thirsts for cuddles kisses etc I for a short while (2months) I went along. Eventually I asked her to get serious with me, she says no, I have a AFC hissy right there infront of her, we cuddle hug and part ways knowing that we'll prob never see each other again. (she wanted a F-buddy)
I go off to travel in asia for a month, BTW guys AWESOME way to get over a girl! trust me . When I get back iam all spiritual happy and shit so I do what i percieve to be the right thing. i missed her birthday whilst i was gone, she made a decent effort on my birthday with presents and bedroom activities so i feel the need to give back. I send her some presents in a box wrapped we have a long convo on phone although initially its going okay with thankyou, i liked ure card i like ure present blah blah, for watever reason she doesnt seem to make her usual effort/ basically she cant be arsed with me. I suggest subtly that i could be passing through her city in a week, and she says she wont be there. So figured she aint interested and doesnt want to know.
Anyways its been a year she aint called texted PMed facebooked, SPAM.

BUT Im now looking for all the causal relations and F-buddies I can get, so my questions are guys:

1/ should i go for her? (please say yes:-))

2/ How the F do i do this? / shes got a guy on the go, If iam right shes looking for the best thing/ she always is! So if I text her or call her do i approach as a friend and ask for a coffee, or drop a naughty text immedietely ?

when we were going out, if we had a bitch fit, I wud text a ''x'' she would reply back with x (indicating kissing) and we'd continue getting more and more naughty so my naughtiest was a sign of her sucking my schlong, hah still cant remember how i did that but yeah so i was thinking of Watsapping or texting her a 'x' to see if i get i reply, if not i can always say it was a typo!?