Have always been hearing this Myth about having Spiritual Husband / Wife, but i don't actually believe if it truly happens to some people. To me, its like a deceptive believe, but,i would love to hear from anyone who has an Idea on such thing.

Supersticious belief.

It's not a myth o! It's real. You may not believe it but that doesn't matter. It's a bad experience and I know someone who experiences it. Spirit husbands and wives (a.k.a. incubi and succubi) are real. They are evil spirits that trouble people and cripple their financial and marital progress. They could be inherited by ancestry or acquired via sex outside marriage. It's sad that many people are ignorant of their existence. Even those who know find it hard to liberate themselves because they don't know how to go about it.

i believe it exists

If you are a traditionalist and you believe in it then you don't have a blame but if you are a Christian, you need to show me where in the Bible it was mentioned.