I am so sorry that you are going through this. It would be best at this point to end the relaitonship as he is not being faithful to you and once they are not they never will be. I have never known a cheater that has cleaned up his act. I know, I have been there and done that. I was your age when I left my cheater and we have five children and he now has been with a woman 19 years his junior for ten years! I feel sorry for her, but she doesn't try to stop the pain! He is also abusive. By the way, forgive me for babbling on about my own problems when we should be focusing on yours...
On a positive note, I have met a wonderful man (yes, they do exist), it took me 9 years and we are getting married in May. I was not married to the father of my five children and after 8 1/2 years, I realized that he never would marry me, especially the way he treated me and he claimed to be a Christian and still goes through the motions of that, today. He is what the Bible describes as a hypocrite, so I really understand your pain.
You are young and, hopefully, will not have to wait nine years like I did. Keep your head up and if you need a shoulder or a hug, feel free to email me at ____@____.com, I looked at the date of this posting and it is about ten months since you posted this and I am finally responding!!! Well, I am new to this site. I am sure a lot has changed since then, so feel free to email me and let me know what has happened since then. By the way, where do you live? I live in Antelope, north of Sacramento and frequent the Bay Area, where I am from, a lot. Feel free to contact me, if there is anything I can do.
Love
Jenni