Relationship help

My boyfriend and I have been on and off for a little over a year now we take breaks all the time and so on and right now just happens to be one of those breaks I want to get back with him I really love him but he’s always looking at other girls boobs and asses and for how I feel about that I can’t deal with it and even when he’s knows I know he still lies about it which gets me even more mad and idek what to do about to anymore any suggestions?