I just get confused about how I can know whether my bf has another girl at the same time? It does not mean he has, I just wanna know generally how to know it. Honestly, I really do not like such kind of thought, cz I know I should have spent the time thinking for such thing in other meaningful and happy things, such as gym, dancing, hang out with friends... Yet I still wanna know the answer to it. Ppl here always talk about Trust, however, I think ppl are changing, surroundings are chaning, it is not easy to find a 100% trust in today's world. What do u guys think?