There is a girl Ive known for about 2 months. Im photographer and she's a model. I meet her casually because of our job and I really didnt have any preassure to know her better. I didn't know when and how but we started to talk more via internet, started to meet for a coffee or sth.
She's in relation with a guy and I know its close to end. She told me lately that she prefers my company than his, she canceled meeting with him to go with me for a movie. I didnt do any moves because she seemed happy with him, but recently we've been talking a lot about our personal things and told me that she caught herself on looking for some1 new to meet with. There wasnt anything between us, we just talked, small kiss for hello and goodbye.

And yesterday we went for a party, just me and her. We had a great time, we were dancing together all the time and while we didnt she was siting on my legs, touching my body, my hair, we were holding very close each other, our hands.. Vibrations were so strong. Then we went for a walk, still holding our hands.
Before entrance to her home, I asked her sth along "was it just % or sth more?" She told me it was great fun and she dosent know.. And that she has to clear things in her head. I told that sometimes its could to give a chance to a relations and she answered that sure. Then we kissed few times, nothing big and french. I told her that we will meet next week and talk about it.

Today she was leaving for a job for 2-3 days. I proposed her Ill take her to a train, she said that sure, she will be very happy. Ill meet here and lol she came with her BF, it was soo heavy in the air He went with her just to my car, gave her a little kiss, and went back to his house in anger.
I waited with her for a train, but really there was not any SPAM to do anything, even take her hand. It would be totally weird that after her bf left her with me, I or her starting to act for example like yesterday on a party. So we just had a trashtalk, but I could notice how she looks on me, on my mouth, on my eyes. I gave her little kiss, and train gone. She will be back in 2-3 days.

Now I dont know what to do.. Should I txt her? Or when we will meet talk about us ? Or let the things go with the flow.. I dont want to make a pressure on her. But on other hand I know her attidute to her current relation.
I think there is potential there could be sth in between us.. Just how to create a strong and normal relationship bewteen us ?
Thanks for any help !

ps. sorry for my english mistakes, its not my native language.

I wouldn't mention the BF for a start or try to disqualify him in anyway, doing so will lower your value. Leaving him will have to be a decision she makes without outside forces and pressuring her will push things against you.

As for while she's away a quick call probably wouldn't hurt (couple minutes because you're busy but just wanted to see how her shoot went) and it's probably something her BF will probably forgo so it'll raise your value while lowering his significantly. Failing a quick call a short text would do, nothing that starts a conversation but just something small to keep her thinking of you. Too much 'tech' talk leads to LJBF so be wary.

A lot depends on how you've been with her so far really this far into the relationship and suddenly changing your behavior to meet some game principle is risky, just go with the flow and act as you are.

Thanks for Your response. BTW, she's 19 and Im 26. Exactly how her bf is and she told me lately that older guys are much better. So thats a good sign too I think.

I get with her to this moment acting very spontanious, there was no preassure, every meeting or this party - just happened, we set a time and meet and talk a bit on the net. So I dont want to change it. Actually she knows im interested in her not like a friend. After this party I also told sth like, I want it to be sth more.. She said, she knows it.

I mean.. If I walking her to a station, nor her BF (he walked her to my car, and she was not happy with it ) ), if she says that prefer spending time with me, if she go with me for a movie and refuse to go with her bf to the caffe.. And her beahviour on the party. This have to mean sth!
Now I remember that when we were siting together on a party, I gave her kisses on her neck etc, and she liked it, she made mrr, and stick closer to me, playing with my hair.. its good isnt it?

I dont know one thing.. Ok she will be back, ill meet her and ? Should I act like nothing happen, do not mention anything, just meet her few times again and in right moment give her hug or take her hand, give her kiss etc ?

OR maybe I should talk to her about us ? Say, "I wanna be with you, I care about you, what do you think" etc. ? Maybe to make step in her life, like breaking with this bf, maybe to do it she needs some strong evidence from me that if she will do it she will be with me ? To avoid end without anything..

Also we talked that we want to go for a weekend in 2 weeks to one city in our cuntry, to visit it etc. So maybe it will be good to wait to this time, meet like always and see if we will go and if yes try to clear the situation on this trip..