I've been going out with the guy of my dreams for nearly four months now. When we started going out we texted 24/7, he complimented me most days, said thoughtful things and made lots of genuine promises to me. On new years he went away for a few days camping and wasn't allowed to text on his phone. I found that I coped easily not talking to him for this time knowing that he probably missed talking to me and as soon as he got back we'd go all out for a day. But after he got back he was hardly enthusiastic to talk to me. He wasn't saying any sweet things at all and the conversations we had were somewhat lifeless. I saw him the night after at my familys function that he was invited to. I bought an expensive dress that I love to death that day and had my hair dyed the colour he had always said would look good on me. The only remarks he made that night were that it was "nice" or it looked "great". Which was a bit disappointing but I looked past that. When we talked about relationships and other couples breakups I told him "If you lose feelings for me you need to tell me, dont drag it out and fool me about it". He agreed. What he would have usually answered would be something along the lines of "I would never lose feelings for you so you dont have to worry about that".
He's been at a friends place for two days and I texted him once and it had come up as "Read" and he never replied. When we say goodbye we used to say "I love you" as well but that never happens now..

Is I because we're reaching that neutral stage in the relationship where we don't need too much reassurance and just go with it like a married couple or is he actually drifting away from me?

When I ask him he says that I read too much into things and says I need to calm down and its getting annoying for him. So I don't want to talk to him about this..

It does seem as if he is sending you mixed signals, but the worst thing you can do is continue to press the issue. You have already expressed to him that if his feelings for you have changed, he needs to tell you.

Now the ball is in his court.

What you should do next, is continue to live your life. It may be difficult, but stop texting, emailing, or calling him. My grandmother used to say, you can show people better than you can tell them. By refusing to chase after him, you are letting him know he is not the center of your world. You had a life before him and you have one now.

One of two things will happen: he will miss you and contact you. Then you two can decide where your relationship is headed. - or -

He doesn't make much effort to reach you. If this happens, it may hurt, but realize he is showing you exactly how important you are to him. Listen and take heed.

Good luck to you.

I could be wrong but it sounds to me like he has lost his feelings for you or maybe has even found someone else. The going away and not texting thing seems to have been the start of it all and I have to wonder if he met someone on that camping trip or if the idea was to go camping with someone else anyway.

You probably need to sit down with him and talk to him about this calmly and see what his answers are.

There's far more going on in this tangled web then you are letting on here.
Your other threads are very telling and give a clearer picture.