Is it Rape ?

Is it still rape if your in a relationship?
Basically me and my ex were in a relationship for about two months then one night I got extremely drunk with my friend and my boyfriend of the time picked me up and took me back to his to stay for the night when I got there he tried it on and I said I didn't want sex and then passed out drunk I woke up to him having sex with me knowing I wasn't awake!i was too drunk to do much but I did push him off and said no and passed out again I woke up a second time to him roughly having sex with me again I made him take me straight home as I was in shock I didn't even fully understand what had just happened it didn't sink in properly for weeks But now it's all I can think about and it's truly destroying me as a person.