I think that it is really important to follow your heart and to do what feels right to you - so, if you feel like you want to start dating now, then do it! But, if you feel like you want to wait until you meet in person, then that is okay too - there is no right or wrong answer to this question - and it is really up to the two of you to decide what feels right for you and for your relationship. So, please just try to do what feels right for you and trust your instincts - and everything will work out the way it is supposed to :)