How do you talk to your crush when you and your crush didn't even talk to each other before but your friend hated your crush?

if your friend hates your crush its simple you first start talking to your crush once you get the point when you can ask your crush to do something you ask if he or she will be more nice to your friend say sorry for what he did ect. if he or she doesnt then that tells you something about a guy or girl and its how he or she will treat you if he or she simply doesnt care that shows he could really care less about your friend you know something is wrong and the relationship simply doesnt work.