I agree. She is frequently thinking about (which comes out through discussion), watching and dreaming about him!
She told him a dream she had about him, in which they were ball room dancing and he trips her up and starts licking her stomach.
She fancies him but does not want to admit it otherwise she will come over as being two faced because she has been flirting with Spenser, denying to everyone - that has asked - that she fancies him.
She is well aware of what people have been saying about her, that she is a flirt and has been working her way around the lads. Alex told her, so she is probably trying to save face now.