Why do you think she invited me?

So I work with a girl. We are both 21 years old and both want to be working in same field. At work we tend to flirt a lot, have long convos and she shows me good signs of attraction. The problem is that she has a boyfriend and when i found out I've been distant.
She said she is forming a group of 6 people and wants to go to another country for two weeks to help people there. She wants me to come. This would mean we would be together all day for two weeks.
Why did she invite me and whats happening?
Why do you think she invited me?
Add Opinion