Will I get punished for having gay thoughts?

I know that being gay in Islam is a very major sin and I would never let my self fall into doing this and engaging into this act no matter what my feeling and desire tell me. What I want to know if I have gay thoughts purposely or unintentionally will I get punished for it. Also I would like to mention I don’t have these thoughts about everyone who’s the same gender as me but just one particular person. And that’s how I know I’m not really gay.