Body:

I was at a party last night, and there was a HB8 that I have known for a long time, but we hadn't spoken to each other for almost two years.

So we start talking, and she practically ignored everyone and only talked to me. I can read IOI's and she was touching her hair, leaning forward, lots of smiling etc.. So I'm thinking: "This is going great." However, she then mentions she has a boyfriend, quite out of the blue.

Then we are still talking about all sorts of things, she agrees with anything I say. She talks about her doing some course about nail polish, so I use that as an excuse to hold her hands for a while. Then she once again mentiones her boyfriend, while still giving me IOI's.

And this goes on for an hour or so, I was enjoying the conversation, and I got her number and she is gonna cook me italian next week.

TL:DR Got IOI's from HB8, but she mentioned she has a boyfriend every now and then. I have her phonenumber and we have a dinner planned next week where she will cook for us.

The question:

What should I do during/after dinner? I don't want to steal her from her boyfriend, but she does give me mixed signals.

Thanks in advance.

EDIT: I don't really care about morals. May the one with the best game win.