confession; my friend has a crush on me.

So this isn't really a confession on my part, more of a confession on my friend Arin's part. So I was told today by my friend Christina that one of my best friends ever has a fookin crush on me! I'm actually so nervous about this because, like, I think I like them too but I'm not sure and its so weird because I've never dated anybody in my life and I don't know how to confront someone who has a crush on you and like I'm so worried that Allison and Christina are lying to me and if I go and tell Arin about it and it turns out to be a joke on me it'll be so embarrassing to have told them about it in the first place! AGH!

Please, if literally anybody is reading this please tell me how to confront somebody who's got a crush on you/tell someone that you like them back!