Low sex drive

Seriously I always died to have sex and couldn't wait and was 24/7 super horny.. then I lost my virginity and went wild the first few months always wanted sex and trying different things and even when I would have sex I would want to go for 2nds and 3rds and I was just like uncontrollable. Now it's been a year since I've lost it and this last month my sex drive has been soo low I barely ever get horny and even the other day when I was having sex with a guy I used to die to see I honestly just didn't enjoy it like I used to and wished it would end. What can I do to get a healthy sex drive again ?