I met this girl months and months ago but only became good friends recently, and even closer when she broke up with her 3 year bf. Less than 2 weeks after their split up me and her got closer went out on dates, things were just happening so quick, we said we'll keep it casual because she'd only just come out of a 3 year relationship, but the opposite happened, we slept together, and things we going as if we were a couple but we weren't, we met up a few times every week and spoke every single day.

All of a sudden she found out about her ex being with another girl so she tell me that she realised that she's not over him and that she needs time and space to get over him, she told me she really likes me. I was frustrated because we got on so well and i really liked her, she told me to give her time to get back on the line and see how things go and that she really liked me. We spoke normally for a few days after and everything was just fine till i thought things weren't going so well as they used to be so i tried to call her and i admit i came across too clingy and that's what she said to me, that i was being clingy and ruining everything and for that reason she just wants to be friends.
How annoying can that be to know that you messed everything up yourself? We spoke 3 times after that, the last time we spoke we had a normal conversation and she told me that she saw her ex but doesn't want to get back with him. I haven't spoken to her since, and it's been over a week now and i am not going to until she does. Tthe problem is that i will see her next week at our friend's birthday party as we are both going so i don't know how to react, or what to say or do :S i don't want things to be awkward that's for sure, and i want her to realise that she actually likes me not just wants to be friends because i was clingy.

How and what do i need to do? I do still like this girl no lies but i'd already slept with someone else because i was that angry :S not an excuse but that's the truth.......... any advice?