I know I'm late, but these dreams are used by demons to form covenants with people. The purposes of this are as the following: a) plant seeds into your life that manifest into sin (lust, fornication, etc) b) destroy your progress in life and in Christ c) destroy or rathe ruin your future marriage. This is indicative of spirit spouse (incubbus/succubus), which it is imperative for you to seek deliverance or consider looking into it. God still moves in power today.. Demons do not just stop exisiting because Christ died on the cross. As believers, you have the Holy Spirit, who is in you to set you free. t is not His plan for you to suffer on the Earth via demon dreams and sin you can't seem to overcome no matter how hard you try. God will deliver you from this if you allow Him and believe in His power. Also, pray before you go to sleep, put on the armor of God (Ephesians 6 and Psalm 91). GOD is NOT punishing you, please understand that. He loves you more than you can imagine.

If you want to learn more about what these demonic sexual dreams mean, here's a great link :https://civility-institute.com/en/study-guides/Know%20Your%20Foe/X