What do I do about my friend?

My best friend is a guy… Me and this guy been friends for years and I been there for him through everything from mutual fighting friends to online gf break ups, and when his mother died i was there for him.We used to be very close he would call me a lot or text me alot we used to hang out all the time. Now it is like Me and him hardly see each other as it is, i be lucky to hang with him once a month. He doesnt call or text like he used to. He only does it i notice when i post something questioning our friendship. Which in any case lately i been questioning it alot. He was there for me through it all. I guess things do change, well they changed a lot lately.

He finally met a girl that was offline, and sure he wants to spend a lot of time with her, they been dating for i think about 2 months. Through the time they been dating i havent seen or spoken to him, I figured he was too wrapped up in his relationship to care that I needed him. He was the best friend i could tell things to and he would never judge me only advice me. I know what yall must be thinking, “ she is just jealous.” Yeah in a way i am because she is getting all his attention, and when i need him the most he isnt there and it hurts.

I made a big step in our friendship to meet his girlfriend, he said he would pick me up at a certain time and an hour went by i called to see if he was coming, and no reply. Another hour went by and still i called again and no reply no return calls, texts. I even called and left a message asking we could reschedual if he would rather be with her than hanging with me. Two hours and 15 minutes goes by before he and his girlfriend pull up and I am not the type of person to be happy after waiting for awhile. I was angry and hurt and i told to just leave. If he was a real friend he would have atleast returned my calls or something. He says I wouldnt have been the 3rd wheel and I wouldnt get in the way, but I knew that i would be. I have been trying to be supportive, but that was the last straw.

He told me he would never let a girlfriend come inbetween mine and his friendship, and he has let it happen twice. I dont know whether to turn my back on my friend and forget he existed or try to talk and explain how i feel. Maybe sometimes things are better left unsaid. I have been abandoned by guy friends before when they get girlfriends, and its like boom months go by and when the gf breaks it off they come back and talk to me like nothing ever happend. I am not going to let that happen again.

I bet a lot of you went through this, i was wondering if there was a way i could solve this?