Obsession v Love and when to get out.

So I got married last June. I had a supportive partner, we hadn't been together very long(probably part of the problem)but he was strong, goal oriented, loved his job and was helpful with the kids and just very supportive overall. Until after we got married. Suddenly he didn't want to go to work as much, he would rather be near me. Then he became very overly sensitive, invasive, needy, etc. I never gave reason for that. I went to work on weekends and school on the weekdays. It worked out that way months before we got married. Then suddenly on my little 30 minute lunches at school, if I didn't come outside immediately he was impatient or whined that we didn't have much time together. We had a healthy sex life, did all of our shopping together and did spend time together in the mornings, lunches and after school/work. It was never enough for him. He got to where he wouldn't even let me do homework in peace. I sat down with him time after time to explain I needed space. Especially when working on college assignments that couldn't be made up if I just couldn't get them done in time. He worries every time I get irritated about anything. When I tell him he's hurt my feelings he goes and cries about it and acts like I hate him. He needs validation multiple times a day or he's upset because he assumes I don't love him anymore. He's been going through my phone and pestering my best friend to ask me about my feelings. It's like he doesn't trust me at all or ever listen to me when we have a conversation. He never tried to improve or actually give me space. I'm out of college and have been since December but even with all of this extra time together, it's not enough. I finally started looking into the topic of obsessive love. I think he is more obsessed with the idea of me because he is very selfish and generally won't do anything that doesn't benefit him somehow. He doesn't think of anyone else's needs before his own. When I was reading about obsession I came across a part that said memory can be a part of it to identify it. Someone who loves you wants you, not needs you, knows the things you like, your favorite movie, color, candy, etc. So I asked him what some of my favorite things are. He didn't know the answer to any of them. Not even close. I have been regretting getting married because I felt blindsided when this insecure person came out of who was once my loving husband. I genuinely loved him. or rather who I thought he was. Now I'm not sure what I should do. I've been trying to work on it for seven months now. That almost the entire time we've been married. He tries to convince me every time that things will be fixed and then never does anything. Nothing changes and I can never talk to him seriously because every time things don't go his way he just cries about it. I'm exhausted with it at this point. I locked the bedroom door a few weeks ago and set my phone alarm so I could wake up from a nap and he freaked out. He always wakes me up a thousand times for petty shit and I wanted a nap. just for an hour. His excuse for freaking out was "I couldn't get to you" Why did the need to get to me? He's freaking me out now. I woke up once to him crying over me and talking to me in my sleep about how he's going to fix things and make me love him again. What should I do about all of this? I'm obviously not happy and he says he's happy but turns into a basket case every time we talk