Do you think she was trying to get me jealous?

we were in a gym sitting down in the bleachers and there were alot of people around us...my ex gf and her bf were kinda sitting in front of me but just 1 seat to the left....then my ex gf was basicaly sitting sideways towards me and her bf..she was being a LITTLE loud and just talking about some stuff with her dude friends behind her..... then she puts her head on her bfs leg....she obviously knew i was there but .......just a curious question... do you think she was trying to get me jealous in some way?