i’m sooo upset

My boyfriend of 1 year and 5 months decided to want a break to be himself and talk to other girls . the girl added me on snap and tried to get me upset , so i delete her . i feel like shit and want to start cutting again . he said in his forever but he don’t text me , he texts her and call her the nicknames he call me . he claimed he just gonna play them but it hurts me sooooooo bad ... i soon give up in life .