I'm obsessed with a lady at church! Help?

So I'm a 15 year old girl. Im straight and have a bf so it's not anything like that. But I'm obsessed with her! I think about her all the time, try to figure out her likes and dislikes so I can copy them, look for excuses for her to see me, try and talk to her, I even will drive by the church just to see if her car Is there! It's really weird and I want to get over this! It will make my day if she talks to me or hugs me! She is a strong Christian and a great person. When I was younger I used to try and be like random people and copy everything about them. But I think about this person nonstop and it's driving me crazy! I used to be obsessed with this other person before her, but not anymore. I need help! I think it's beacuse I crave attention and just want people to care about me at church. I always want to know what pol are saying about me. Please help!