Relationship problem...

Me and my boyfriend have been together for 2 years almost (agust 20th) and i feel like i dont love him no more but, i do. i know i seems werid but if something was to happen to him i would care so much but everytime we get in a arguement i dont talk it out, i just ignore him and its easy for me to ignore him when he's calling me 50x or more and its mostly my fault we argue but, he stills trys and i dont.. I love him very much but i dont just feel nothing there's no more. We have cheated with eachother in the beginng. Me: 2x Him:5x maybe 6 and he also kissed some other girls, he is abusive and does drugs but i cant never leave him.. And when i do he freaks out bad.. I dont know what to do..