Need advice

Ok so im talking to someone (so far all we have done is talk and kiss, nothing too serious yet) and we both like each other and care about each other but she does drugs...we are talking as mundane as pot to as extreme as cocaine, if you can think it she probably has done, is doing or wants to do it. Everyone I work with is telling me to get out while I still can but I really care about her...what should I do??