I live with this Thai woman and she's been showing IOI consistently. She always asks me if I want something from the supermarket and offers me food she cooks. Then today she asked me if I hit the gym today and started rubbing my arms and called me "sexy". I felt horny and asked to sit with her (she was about to have lunch). She said she had some work to do (which is true from the looks of it) but suggested she could cook a meal for us next time.

How do I escalate this other than asking for drinks?