(This fundie is responding to a Muslim girl who worries about her friends and not being able to convert them)

You need to give up some things for the sake of Allah, and in sha Allah you will be rewarded for it. It's up to Allah who He guides to the Right Path. If you don't feel comfortable preaching Islam to them, you need to let go of these "friendships" and make friends with pious, believers. I am sorry if this sounds harsh but there are many sacrifices we have to make in this dunya, and in sha Allah we will be rewarded for each one in the Hereafter.

"O you who believe! Take not the Jews and the Christians as Awliyaa’ (friends, protectors, helpers), they are but Awliyaa’ of each other. And if any amongst you takes them (as Awliyaa’), then surely, he is one of them. Verily, Allaah guides not those people who are the Zaalimoon (polytheists and wrongdoers and unjust)" 5:51

It is clear what you should do even if it can be extremely difficult for you to do it. May Allah guide you and assist you.