Fetish?

Why when I’m with my boyfriend do I always get the sudden urge to grab his package and stroke it? Anyone else? He always says he likes it but I’m afraid I’m coming off a little too strong. We’re both in love with each other & he knows I love him. I just don’t want him to get the wrong idea that I just love him for sex ya know? I just get super horny and feel like giving him a handy a lot (and sometimes blow jobs)🙊