Well an obvious answer would be that they would tell you, but things are always that ideal. I would pay close attention to their actions, do they make an effort to make you happy? Would they be okay with you being with someone else if it made you ultimately happy? It's not a straight forward answer, but love isn't straight forward.
depends on what sex they are
make your move but if he already has a girlfriend say sumeyhing dusging to therey boyfriend and they will dump them then MAKE YOUR MOOOOOOVE!!!!!
