Why am I horny 24/7?

Me (f23), I’m constantly horny 24/7 everytime my fwb (M25) is around. I don’t know what’s happening, since I’ve been taking the pill and usually that makes you want to have less sex, but every time he’s around doesn’t matter what he does I throw myself at him ://. The other day he stretched his arms and the way his muscles looked made me wet instantly. It doesn’t even matter if he just puts his hand in my back or caresses my hair, sometimes he just wants to cuddle and I’m like heck no we’re having sex. It doesn’t even matter if we just had sex cause after that I’m still horny, is that normal?