Guys, what would you do in this situation?

So imagine you’re at an engagement party at your friends house and his sister lives with him. She gets changed into her pjs (which are just a baggy shirt and some sweatpants) and comes back downstairs and watches tv. She mentions to you that this is her favorite show. She spent most of the party before this running around, taking photos, and you’ve talked to her a few times and she seems nice. Do you stay and watch with her or do you go outside and re-join the party?

Stay with her and watch the show
Go and join the party
Depends on if I think she’s attractive or not (please elaborate)
Select gender and age to cast your vote:
Guys, what would you do in this situation?
Post Opinion