I certainly don't see any reason why not. You should be cautious though you never actually know who you are talking to online. It could be a 50 year old gay man you've been talking to so BEWARE!!
If you do meet her, you should make sure it's in a public place to make sure your safe. Also, have you seen a picture of her? Have you spoken to her on the phone or heard her voice somehow? Have you spoken to any of her friends?
If you can meet her, meet her. However, while she may be everything you hope she is, she may be a disappointment. Worse yet, she may be everything you hope she is, and she may be disappointed with you.