I Still Love Him But Im Torn

Im a 20 year old female and I’ve been with this guy for 2 years. At first everything was good but then I started to find out about different females that he has messed around with. But even after that I still stayed because I love him. Then things started to get worse but I still stayed. We have broken up numerous of times but always got back together. Just recently we broke up and he came to my house begging to be back with me. Saying that he needed me and he know that he messed things up and he loves me and he wants to work on things. So of course I took him back because he sounded so sincere. Now I found out that he has so-called “girlfriend” that he’s been talking to for about a month now. Its kind of strange that they’ve been talking for a month because thats about how long we’ve been back together. But this isnt the first time something like this has happened. He’ll talk to a new girl but when things don’t work out he wants to come home and like a fool I take him back because I love him so much. But through everything he has done me work numerous of times and I don’t know what to do now. Its like I want to be right here because I know when it doesnt work out with him and this new girl he’s going to come back but I dont want to take him back. Im just torn because I still love him but I don’t want to every take him back. I want to get over him and let go but its so hard. What do I do?