GIRLS!!! BIG EMERGENCY PLEASE HELP!!! IM GOING CRAZY!!?

Okay u see there is a new girl at church and she is so pretty and has a great body and she sings so good and she sits in the front and me and my husband sit in the back and she is always looking back which gets on my nerve and she always trys to smile at my husband and i know he looks at her too!!! which makes me mad and ever since shes been there i always argue with my hubby tellin him stuff like do u like her? nd idk alot of crap and he gets mad and tells me im going crazy lol that he loves me and no one else and he would never ever tlk to her or anything like that i just never in my life thought i would get jelous nd its just me!!!! what do i do!!!!!!!!!!!!!!!!!!!!!!!