Two hearts maybe trap inside an unhealthy relation. The signs are simple, just like the situation only providing more stressful atmosphere, can’t speak naturally but only keeping one side’s thought by her/his self alone. We can’t stay to listen carefully each other, or hesitate to do it. We start to blame each other, even for the reason that latter no longer can be found. And those signs, plus more signs shall come to an term of giving up too soon.
Yes, if a couple hearts has those sign, maybe it is a sign of unhealthy relation is going on. Be aware, be careful, be wise.