[header] How to know if your girlfriend is ready to kiss you [title] Watch her eyes. [step] You should be able to tell a lot about your girlfriend's desire to kiss you from her eyes. They don't say the eyes are the windows to the soul for nothing. 
[substeps] If she looks you directly in the eye, she is probably establishing intimacy and is at least open to kissing you. Although eye contact is almost always a positive sign, remember that sometimes people look down or away because they are shy or nervous.