anyone else?

I was sex free for 8 years (only slept with guys I was dating aka 2) well this past summer I got a new boyfriend and ever since then we have sex a lot it’s like I crave it with him and i’m always horny but before him I could care less if I never had sex again .. do you know what causes this? lol I mean I didn’t know if there was a scientific explanation but I love him and it’s so good it’s like I want it all the time when before like I said I went almost a whole decade without sex or a physical connection