Is fantasizing sexually of the person you know and/or want to be with is wrong?

Question

Because i know this lady that i truly want to be with and sometimes when i think about her i think of the things we can do together.

But, sometimes i think of the sexually things about her as a fanatsy which i don't know if it's either wrong or not so i just fantasize about someone else instead of her so i would not disrespect her, even though i don't and wouldn't act upon my fantasy i still feel like i disrespect her by fantasizing about her sexually which is why i rather fantasize about someone like Beyonce or Tara Banks for example.

Answer 1

i dont know what to say

sin originates from thought, however i know of adultery being a sin ut if your hought is of a single woman im not sure if that would clasify as sin