Why love for no return

My boyfriend and I have been dating for over 2 years now and it just seems that he is fading away from me. I love him dearly but he has been coming home late. Not saying I love you. He has also been blowing off our dates. I think this might be the end for us. The worst part about this is that he is becoming very fond of my best friend d just a while ago they hated each other’s guts. Now they act like they are best friends I’m done with this I’m sick of loving for no love in return. I’m done with loving like this it’s over. It’s time for me to move on… That’s what I’m going to do move on