Ok, responding to ~unregistered on nov 11, 2011~ are you 4-real or 8-11yrs old?! If so, you probably don't need to know the meaning of that line in the song anyway, lol. But if you are older & really serious about what it means when he's inside her. He's talking about making love "when i'm in you", as in having his p**** in her v****a. Now, if you are an adult then you should understand what I'm telling you, he feels very lucky to be able to make love to her because she is so beautiful to him, loves him as much back as well & when he's inside her there's no other feeling in the world like it! Get it now? If not, then come back in a few years & i'll esplain again lucy, hahaha. J/k, hope that helped! Now to the real question! What the lyrics mean to me. First of all this song is absolutely beautiful, lyrics, music, video, all of it. It means in his heart & his head this woman is his everything, a love you only find once in a lifetime if your lucky! A feeling so deep & so strong even the most powerful & addictive drug can't compare to the feeling he has when he is with her. It took me 45 years, but I finally found a man who makes me feel that way! I never thought it would happen, had just about given up hope, but boom, just when I thought it was not gonna happen, he came into my life & hopefully never going to leave unless we are parted by death & even then I hope our souls will be together forever. Ty enrique & songwriters for such a great song, love it!