The most heartbreaking love is when you love him, but he loves someone else;
The most heartbreaking love is when you think he loves you, but he is using you;
The most puzzling love thing is that you don't know how much of his feelings for you are sincere and how much is just use...
I don't know how to write copy, so let's deal with it. The heroine is not a novice, not a holy mother, not omnipotent, not seemingly alluring, so be careful!