There are many scriptures both old and new testament, which should lead you to understand that same-gender sexual relations are sinful - it does not matter if they are casual, long-term, abusive, etc...
The design of genitalia alone leads to understanding of natural sexual expression
Oh for some common sense!!!!!!!!!!!!!!!!!!!!!!!!
Jesus said that impure imaginations also need to be confessed and repented of - He desires to make us holy in all parts of our being - spirit, soul and body.