Is it normal that i don't feel anything with my bf?

So, here`s the story.
i`m with my BF, and i love him, it`s been about long time and i feel horny when i`m with him, but when it comes to kissing or touching, i don`t feel nothing.
It doesn't simulate me to go to sex stage.
i get horny before he grabs me, after that nothing more, i feel nothing.
i tried to kiss and touch with another guy, he was way too hot, i was really warmed up, but when we started, i felt nothing. is it normal ??