So confused

I been living with my boyfriend for 2 years. One night about two weeks ago he got drunk left to go to his mom's. He then puts on fb he in a relationship with my sister. He comes back the next day and hasnt left since. He hasn't even made an attempt to go see my sister whom by the way I hate now. Does this mean he really still loves me? So confused on what to do cause I love him so much.

Are you mad? He cheated on you with your sister! And you still want to be with him?! If he loved you, he wouldn't have done that to you. Get rid of him. I'm sure there are loads of other men out there who'd replace him happily. You should talk to your sister and get her side of the story. It might not be what you think.