>not knowing how to properly get a kpop star to fall in love with you

Step 1) Be attractive
Step 2) Pretend you don't know who she is
Step 3) Stalk your target. Find a routine where you know you can meet her (grocery shopping for example). Try to get there before she does so it rules out the possibility of following her. Have an excuse ready as to why you are there at a time you usually aren't if it comes up.
Step 4) Small talk
Step 5) You're in

When attempting to secure any type of friendship with a celebrity you can never let them know how much you know about them. At the most you can say "you look like so and so" or if they mention who they are you can say "oh, you were in X movie or you did Y song, right?" The inherent problem with non-celebrity and celebrity interaction is there is a huge disparity between the level of personal information available. If you let them know how much you know about them then you are doomed.