When we worship God we are the closest to Him that we can become. During true worship we are emotionally and spiritually naked before God. Ever notice that when we try to hide yourself from God in worship you get lost in the music or just kinda sit there waiting for it to be over. But God wants a true worship from you, He wants you fully engaged in worship. He wants to connect with you during worship so love can flow freely between the two of you. There is Love making in worshiping God.
God defines sex as an act of worship between a man and wife. In sex we are in a celebration of God's decision to unite US. That may sound strange. In fact in an informal survey most people said that their sex lives don't include thoughts of God. God created you and your spouse to become one flesh. He made each of you for the other and gave you sex to consummate, celebrate, and solidify your union.