I believe my friend is Bipolar, but I'm not sure Please help

Hello,

My friend and I have been friends now for about 7 months, we started off talking about a relationship but ended up just being really good friends. ( I do still have feelings for him) We do everything that a relationship would en tells ( like call each other pet names and see each other at least 5-7 days a week. but nothing more if you know what i mean.) He pushed me away at the end of January for two weeks telling me that he needed space. He told me to not contact him at all for two weeks, and it broke me down not know what I did wrong. I asked him if we were done has friends and he told me No. Well he didn't even last two weeks, he texted me the following Sunday(a week later), we then went away that weekend and everything went right back to normal. Two months have gone by, everything was fine. He has a friend on the side, that I am some what Jealous about and he knows it. I have voiced my feelings on that,and he doesn't know why I'm Jealous. I told him its because I want that to be me. ( sorry trying to give some back story) He was also in the military for 15 years. I do believe that he does also have a drinking problem but stops when he is in his cycle. He hasn't had to work now for years because of being retired from the military, but wanted to go back to work. So he got a new job, two weeks before he had to leave we had to run around everywhere to get work clothes, and shoes and all the stuff for the training. The Friday before he left, we went out to dinner to celebrate the new job, and I got a little drunk and got jealous abut him seeing the boy toy earlier in the day. He looked at me at dinner and was like I have been thinking about our friendship and I just don't thing we have to much in common, and that you are always negative.( the only thing that i was every negative was the boy toy.) He was also up set that i lied to my therapist that we were no longer talking, he goes why would i be friends with a lair. but yet he has lied to me about many of things. I was in shock and didn't know where this all was coming from. We both went home for the night and meet back up the next morning, and he acted like nothing ever happened. WE went on a road trip and were with each other the whole day exploring and seeing new places, calling each other baby and babe. He told me to make a list of things to do on Saturdays for when we were both off work. He told me all this different places he wanted to talk him this summer. Later that night, we got back to his house and I packed him whole bag. At one point He said " my man is packing my bag for me" and I looked over at him and said what... He looked at me and said " my best friend is packing my bag." After that I went home, The next morning I went back over to his house, got coffee for him and then we went for breakfast, we packed up his car and he called me over for a hug,( the hug is out of the normal for him because he is not a touchy feel person. his hugs are usually a pat on the back, but this was a bear hug.) He texted me when he got up there, and we spoke all day. Monday was his 1st day of training, I texted him " good morning Boo Have a great 1st day" he responded with " good morning baby boy and you too." We spoke Tuesday and weds, he told me weds night that he was proud of me for doing something and that we would talk the next day. We didn't speak at all on Thursday I was giving him some space. I texted him on Friday and Again I get I have been thinking about our friendship and I don't feel like we have stuff in common, nor do I feel I need or want your support. I begged him not to say that and to rethink. He told me that he had some time away from me and that he really didn't think to highly of our friendship. We didn't speak the rest of the day, ( i was so upset) I texted him the next morning and to say good morning and to have a good day and to again say i was sorry and that i wanted him to think about it really hard. He goes your driving me nuts and that i just cant do it anymore. He said he was done, and didn't want to be friends anymore. We didn't speak the rest of the day Saturday. I ended up in the hospital with a panic attack. I texted him Sunday morning, that i was in the hospital last night but he didn't respond. He messaged me on Monday and asked " what was wrong" i told him and he goes oh so nothing important. He goes what are you doing Saturday do you work. (we spoke about me taken off that weekend he comes back to go away at least 4 times) I told him no and Ill be home. He goes I'll be over to get my things. I was like so our friendship is really over. He goes I'm done I'm not here to help your life, I m not going to take anymore of your emotional jealousy and emotional craziness. you don't have a boyfriend because your are so messed up in the head. I tried to beg him not to go and to rethink everything. He then said that he doesn't feel comfortable around be or safe, that i was abusive and not stable. ( i have never once Abused him at all, he is the one that mentioned he could emotionally abuse me because I told my therapist that he and I were no longer speaking.) I ended it with okay and he goes alright.

I just don't get how one day he is so proud of me but the next he hates me. Can you guys give me some help or advice on what to do. I don't want to lose him as a friend.