That's my thinking. 
If she's not interested in you, go find other girls bah. Actually
its not i scared i kena beaten by her BF, its that i feel that its
very cruel and super bad to spoil other's r/s , so that you can
stick to her. I think its just selfish , cause not only that you
will make her unhappy, you will also be labelled as "R/S spoiler".

But if she's not interested in me, but is unattached, then i will
still stick to her. But now she's attached. Dont tell me i spoil
their r/s and force them to break up?
Its just
plain cruel and selfish. What i will do now is to wish them
happiness and luck , and i hope their r/s will last long ( of
cause, i will get hurt emotionally during this process, but guys
are designed to absorb such pains and move on right?
)