I have a man that I Love to the fullest he it's the man that I have really loved

( the love of my life) but after a year of separation of his wife and us dating he whent back with her. Now im with a broken heart still loving him and too weak towards him to take him out of my life. How plz it's eating me inside seeying hin with her and in a way im accepting the situation out of weakness but im hurting myself. He just having fun with me while having stability with his wife. Plz how can I take him out of my heart and show him a stronger determined ME