I'm sleeping with my husband's friend who has been staying with us until he gets back on his feet
Why are you sleeping with your husband's friend?
I am so desperate for sex.
What you're doing is absolutely evil. You're cheating on your husband and you should be ashamed of it.
I'm not ashamed and I don't regret it. I have only done this to make him jealous.
So, it just sounds like you are playing with his emotions. Please put yourself in his shoes as I'm sure you wouldn't like it if he slept around.