Im not able to keep girls for that long, but when i manage to do that there is still a low chance that that will last a very long time. So when i have found a girl i cared about a lot, like you do to jj, it is a big deal to lose her. So for a different point of view on this, i think you should work it out with this jj guy and get rid of gemi for good. Its like picking open a scab everytime she comes around.