Please choose the correct ending to complete the given sentence: Youth: [header] How to deal with having a crush on your friend's sister [title] Take your time. [step] Don't rush into pursuing your feelings. Remember, crushes don't last forever.

Ending1: Don't jump into it because, if you do decide to pursue your own feelings, be yourself and do it carefully. [substeps] If you rush into it, the guy's already feeling the same way. Ending2: You may feel intensely for just a few weeks about this person before your feelings begin to mellow out. [substeps] If you find you still have feelings for your friend's sister after a few months, then you may wish to pursue it. Ending3: You just need time to deal with them. Take it at face value and be open to the possibilities. Ending4: If you feel flattered that the girl you're dating is interested in you, take it slow. Don't jump headfirst into something, or else you could scare her away.

Answer format: ending1/ending2/ending3/ending4