Every girl has a telltale sign of being turned on. In the case of my girlfriend, there are a few:-
- Flushed face
- Glazed eyes
- Being particularly affectionate, including kissing your neck/ears
- Looking into your eyes (and in some cases, looking at you, then away, then at you again)
- Relaxed breathing (do not mistake this one, it's one of the more subtle ones)
- Playing with her hair
The list goes on. Of course, some girls are much more direct and simply tell you they are 'in the mood'.