Right, basically last time I had sex with her was about 2 weeks ago. Unfortunately the week after was her period week and she was back at home then anyway but it was her birthday. Basically being a standard man I forgot to message her on her birthday. Heres the following:

On her Birthday:

Her: Its my birthday!!!

Me: Happy Birthday gorgeous, you are the best!

Her: Awh thanks cutie.

then about 3 days later is my birthday:

Her: Happppppy Birthday you

Me: cheers, come over later to celebrate.

Her: Wish I could!

Me: Aww thats fine.

Her: You owe me a present tho, I'l only accept sexual favours.

Me: I'll blow your mind.

Her: Come over.

Me: Can't party 2nite.

*no contact till next night.*

Her: Hope you had a good night!

*no contact till morning*

Me: Thanks cutie, you should come over tonight.

Her: I can't my friends are down from home.

*Was gonna text her back but bumped into her by accident. Was gonna chat to her and her friend but my friend dragged me off. It was a weird encounter for a fuck buddy. I didn't notice her at all but my friend did and said she noticed me then pretended not to then when I didnt she walked back to get my attention*

Anyway so 2 days later I text her today "How have you been? fun with the friend I hope." No reply at all. Its like she wants my attention but i dunno, its getting a bit weird. Think I need TGFTOG

Fuck buddys are normally on short time as one or the other partners will lose interest or become more attracted and kill a good thing. If you don't want to date this girl then just ping her in a week or so. You cant have it both ways: considering her a fuck buddy then getting exercised when shes not overly responsive. That's the nature of the beast. Whatever you do don't start kissing her ass to gain her attention, that's gonna raise false expectations or make you less attractive