Being honest to my boyfriend

Well, my boyfriend and I have been good friends for almost 6 months before deciding that we should be together. Now we’ve been dating for about a month. I know he has been there for me and helped me out a lot and I appreciate it, but in less than a month, we’ve gone far compared to other couples. We act like we’ve been together for a year or so. He also calls me a lot less often than he used to. A drop from 5 times a day to once or twice every other day. This drop took place right after we made out, and me expressing that we shouldn’t have because it was too soon. Right now this is exactly how I feel towards him :-

-I dont fully trust him yet -that I need time to get used to him -that he should respect me and my wishes more often
-hes being selfish -I think hes just messing and playing -he doesnt give two shits about me

I know that if tell him the above, he will definately get mad at me. If what I feel is wrong (( which I hope )) then I would have ruined everything we have, misjudged him, and been very ungrateful to him. I just think I need more time and that we should slow things down. He won’t listen, he says everything is great and that we didnt rush into things. His exuce is that he is too busy studying or dealing with his problems (( which I know he has many and I pray for him every night god be with him )) I am trying to be as understanding as I can. But I am fed up and I am afraid I might just blot it all out to his face. If that happenned, it would end everything between us.

I dont want to sabotage this relationship, so Should I tell him how I feel or should I just go with the flow?? If I decide to tell him (( which I will most probably )) , how should I tell him, without risking what we have and hurting his feelings?