I have name changed as he knows the username I normally use.
Me and DP have lived together for a year, and it has been great up until this point. I actually thought things were going really well. We have no DC.
Recently he has started to refuse to do things, for example a festival that I really wanted to attend, he bluntly told me "You can go if you can get there, but I'm not coming with you and don't expect a lift." I can't drive and I'm not sure we could afford to run 2 cars anyway. We live in a rural location with no buses, it is 26 miles to the nearest train station. I have a hobby I like to go to and he has now also started to refuse to help in any way, he won't bring heavy equipment in the car etc for me. I decided to apply for my provisional licence and have saved up some money towards driving lessons (£500). When I first told him he laughed at me for about 20 minutes straight, when I asked what was funny he just smugly said "no, no nothing." and continued to laugh 
. He has since been trying to convince me I should spend the money on dental treatment he wants, he won't go to an nhs dentist so it costs a lot more. I don't think he really wants me to learn to drive myself.
Valentines day we didn't do anything, I thought he might take me out for dinner or something but nothing happened. I didn't get a card etc. Although uneventful it wasn't a bad day, just a normal saturday. We hadn't argued or anything, then when we got in to bed I asked for my pillow back, we had 2 each but he took one of his another room to use on a chair for his back and had left it there so take mine. He then said "you are such a whinging cunt" and threw it on the floor. I don't know where that came from. I told him I didn't want to be spoken to like that. He just said "Whatever" and "I can't be arsed".
The next day was horrible. I mean, it was unbearable. Any attempt I made at speaking to him I got one word answers very aggressively. I only mentioned mundane things like what shall I make for dinner etc. Sometimes not even a word just a grunt or "hmm" sound. I then tried to show him something related to my hobby and he said "I don't give a fuck". He literally didn't talk all day and we sat in total silence until I left to go meet a friend at the pub because I couldn't take being in the house any more. While I was out I got a text basically accusing me of being the one being funny. I replied and just said that I needed to get out for a bit and that I wasn't in a mood. He often makes comments about me cheating on him or having somebody at the pub (which I don't) and I told him I find this really offensive. He just carried on. It is the only place I can go to socialise as it is the only thing within walking distance (about 3 miles).
I don't know why this has happened. He still isn't being normal with me now and I honestly haven't done anything wrong. What should I do? I've been in only one relationship before and after leaving that one I promised myself I wouldn't end up feeling low all the time and like I'm going to get in trouble all the time. I'm not even sure why this has happened.