it might flower if you let it get cool at night time for a few weeks. Mine flower for me if I give them an 8 degree celcius drop in temperature at night time. Maybe gently take the plant out of the pot to inspect the roots, try to keep the rootball in tact with the medium still attached, just to give yourself a better look. If there are lots of roots outside the pot it sounds like its quite happy, although I would wonder why the roots dont want to grow down into the media? Have a look at the remaining roots just to put your mind at rest but maybe keep them inside for a while to dry them out.