she cries 4 me but we've not met face 2 face

i met a gal online we chat and flirts alot and I even gave her my number she calls me always an she insists that she loves me, she always sends me sms frequntly my galfriend never knew this but I openly told her about it and she was fine with it because she trusted me, now the gal i met cries each and everytime she calls me because i told her that i have someone to whom i dont dream of breaking her heart