Bit pissed

Okay so I'm a lot pissed with the situation.
So she gets back to the UK but we have to postpone our get together because she has family problems, ok can't be helped we all get that, I had gotten rid of my sister and daughter for a few days so ended up having a quiet night to myself.

When we do get to see each other I spot her walking to where we're meeting holding a guy's hand, I didn't see where they separated but it took her over five minutes to walk the short distance from where I lost sight of her to where I was, we were both a bit cold with each other, she kept her jacket done up to her neck even though it was very warm, we got back to my place having not spoken all that much during the evening, I gave her the necklace I bought but had to convince her it wasn't expensive before she would except it, I also had to convince her to let me put it on her, when she opened her jacket I saw what a lovely top she was wearing and showing quite a bit of cleavage, although she quickly done it up again.

When it came to sleeping arrangements she had a look of horror when I asked if she wanted to share with me, in the end I told her she could sleep in my sisters room. After laying in bed for about 15 minutes I was a bit pissed off with how the night had gone so decided to talk to her about it, she was laying in the bed in her underwear and as soon as I entered she covered up. We talked for a bit and I told her that I had feelings for her but she said that she didn't have any for me, which I was a bit upset about because it was completely different to the person to who she was before she went away, I went back to bed in a bad mood trying to not let her see my mood, I decided to text a girl I had been on a date with before xmas, she was too busy to see me again at the time, anyway we got texting a bit that night and agreed to see a movie together the coming weekend.

I the morning I couldn't be bothered, I had accepted the fact that this was probably the last time we would spend together as she seemed to was to leave in a hurry. We had breakfast and she seemed to just want to get on her train home which was in several hours time. We went shopping and tried on a few outfits, when she came out of the fitting room in one dress she looked absolutely beautiful and no longer caring about things I made a flirtatious comment, she smiled and blushed at the same time and from that point on she warmed up to me, by the time she left it was like before she went away, having a coffee before she got on her train she said that her flat mates were going away for a week in summer and she asked if I would like to stay with her.

So I'm not sure if I'm still pissed off or just confused about the whole situation!

I think I just revealed a bit too much of my life but what the hell.

Edit: she told me that the guy she was with was her ex-boyfriend (only after I told her I saw them together)