The man came on to you because he is a clueless nonentity that only reason with the tail in between his legs. Some would even lie and make it seem like there is trouble in paradise. The truth is, He is still in love with his wife. In your stupidity , you said his wife is not sexy, she is fat, unsophisticated , slow , lackadaisical, look much older than he is. Skinny bony, he married her because she is rich not for love. She has no tangible source of income, not intelligent nor enterprising . My dear keep living and dating him in the world of illusions that you created for yourself. You are there alone The mistress only exist for pleasure while the wife is his priority. You are not even close to being an option because he is not available. His heart is taken. Supposing he did leave her , her presence or shadow remains undeniable threat So you said , you chased him but he kept coming back, sure he would ,most of them does, dating you is so convenient