Friendship dilema

I didnt know where to post this! My best friend keeps saying that if I want to mature and grow as a Christian I need to get more passionate for the things of God than going to Guy Sebastian concerts and talking about him on Facebook and stuff! If I had to choose obviously I couldn't live without God but in her eyes I can't grow and get to where i'm supposed to be if I continue the way I'm doing this area of my life. I know she will never understand it but I wrote this excerpt from a letter to her explaining my thoughts. I didn't hold back like I would usually!!

As for focusing less on Guy and going to concerts - I have done very few since I got sick and lost my job so when I can it's a huge excitement and I wont apologise for that! Not everyone’s life can be exciting all the time but with the way mine has been these little moments of excitement are needed and deserved I think. Not saying i'm better because of what i've been through but if you were in my shoes I would think you may agree. It's like you said, different friends you bond with differently because of shared interests but none is better than the other. That's how the friendships I have created through Guy make me feel because of our shared interest. It's like I can talk with them differently than other people and that's healthy. I have worked very hard to have less pictures around and signatures because I know it's not great for others to see sometimes. It's like I don’t try and understand all about your love of V8's because it would probably bore me a bit and I respect you have different likes and hobbies. Part of the excitement is connecting with other fans which facebook is a good way to do. I only converse with other fans about him on there so i'm not sure how you can see our conversations without being friends with them as well. I really try and keep that sort of thing to a minimum and I thought I was trying hard to be well rounded person online and talk about different range of topics but obviously not enough to your satisfaction.
I do want to try and mature with god and know him more but after you've been in Church for a while the passion dies down. I heard someone say that if you had a choice between Guy and God who could you not live without? Obviously I have said God definetly. Doesn’t that say something about where my heart is at??

I don't know if she is right and I do need to do things differently or can I still have the excitment of being a fan of Guy but still grow spiritually in the areas I need to? It's somewhat of a cross roads; I thought a while ago I needed to cut down on my focus on Guy and spending money on concerts but I stood my ground and thought I could do both and still get to my calling in life but now i'm not so sure. Basically she thinks im putting being a fan of Guy ahead of growing spiritually which I have tried hard not to do at all ever.