<human>: Summarize the given text in a few sentences.

So I've been seeing this awesome girl now for 3 months and things have really started escalating and seeing each other more and exclusive now etc. 

I like her a lot, probably a lot mor Ethan she does me, but not so sure as she is. It very open with the talking about that stuff. 

I have this problem, since the start of seeing each other after I've seen her that maybe she has changed her mind and isn't that into me. 

Like she plays little hard to get at times, but I think it's more in a cheeky playful way, as in her nature to do it. 

But it leaves me with a bad feeling every time I leave her as I think has she changed her mind. For example we spent the last 2 nights together, had a great time I think. Last night she was in a bit of a strange mood, we didn't have sex, but were pretty tired. Then this morning we had sex and she was more affectionate etc. said she was in a bit of a strange mood because of something she saw on Facebook. She wouldn't tell me what, I asked if it was something to do with an ex, she said no but still wouldn't tell me what it was. Things like that make me question things a lot, like if it really ain't an ex why wouldn't she tell me. I didn't push it though and left it 

Nevertheless, I am very insecure about this sort of stuff and don't know how to handle it. I just feel like I don't have her unfortunately, not like a piece of property to own, but you know what I mean. It's getting to me.
<bot>: seeing a girl 3 months still insecure over little things she does. How do I find out just how much she likes me without seeming needy and clingy?