Should I quit fighting for this friend?

Wow! This is a really long story but I will try to make it understandable. Me and my girlfriend lived in our own apt. with our good friend, who is a female. My gf and the other girl worked together along with this guy. The guy came over at first for the girl, but after awhile we became good friends. We went from talkin about her, to talking everyday, even thru IMs and stuff. Over the Christmas break, we became close, as we were both away as college and there was no one else kinda. He was crazy about my roommate, and did everything for her, even slept in the same bed with her when he was suppose to be staying the night with me. It pissed me off just a little that he would lie and makes excuses when he wanted to spend time with her, so that he wouldn't have to hang out with me. He told me I should trust him, because he had a gay friend, which was weird. And he always did these weird things, like asked me if he was ugly, asked me if I needed a hug, and kept cherry lube in his duffle bag. He had a best friend back home, which I thought was the "gay friend." I got into his facebook and found messages from him and this friend back home and indeed the messages were gay ones. Him and his friend back home got into it, and well after that my friend changed. He didn't come over as much, and was more of an ***. In the beginning, he would do anything for, I mean anything. Bought me things, always invited me place, and always made sure I was ok. Even once he became an ***, he would still call me at 2am to apologize, and bring me a pizza the next morning. I started working with him, and well summer was coming up. I knew that he would be moving back home from college for the summer, but he said he was moving in with me. We just started fading fast, and when summer hit I had to find answers. I talked to his friend back home, and he spilled the beans. He siad they were gay and all this stuff. Well, my friend totally stopped talking to me and tried covering it all up with lies. Summer went on and we made up and starting being friends again, but it wasnt the same. He started trying to be a friend inviting me places, but the distance was just weird still. I tried to get some cles with him as the new semester was gonna start and he was moving back soon. Well he told me that this whole time we been friends over the summer that no one know, cuz when he got made he told them all that he hated me and stuff back at his home town. I got made and tried to talk to him, but he said he was tired fo talking about problems and that he didnt care anymore. We talk a lil now, but should i even talk to him? What should I do? There are many MANYmore details, but he was a really good friend and I didn't wanna lose him.