Masturbating in a LDR

I'm in a long distance relationship. He will be home in about 9 months. I can't help but get horny, especially during ovulation. He tells me I should wait because it'll be "so much more special" but it's not like it's the first time we've had sex haha. I love masturbating because I've given myself such great orgasms and I've figured new things/spots that pleasure me. Is it bad to masutrbate while in a relationship?