Would telling my fiance the truth hurt him? I hate lying to him?

Im 25 and engaged to marry my fiance whom i've been with for 2yrs, He is 30 & from England and im American, We live in the UK together. He is in a touring band and has been since he was younger, Im a professional dance teacher and cant travel with him alot but he always begs me to go with him, Only im not really into the music his band makes, Don't get me wrong, They are talented and have a huge following but i just cant seem to get into it. He doesn't know i think this as i think it would hurt his feelings, He thinks im into it but many times when they play i make the excuse that i have to do over time at work or something. I've never been into alternative rock music but when he is on stage i support him as he loves what he does and i love him to bits. I love traveling with him when i can but i hate the girls trowing themselves at them but i mostly laugh it off. Am i horrible to feel this way and lying to him? I know it must sound stupid but i hate feeling like this, Any advice?