What is up with him pressuring me for ??????

My boyfriend has always kinda wanted it. A couple of years ago I bought a vibrator and tried to practice, and I got to the point to where I could probably do it with him. We tried and he expected me to be able to do it like I had been doing it for a while! Not really patient at all! So I told him that I didn't want to do it again. He has asked times after that, but now more than ever he is getting really impatient. I just don't want to do it. I know that bad things can physically happen.. like fissures, leakage, etc. And plus it hurts. He tells me stuff like he has had it before and he still wants it... and that he knows what he likes. He gets mad because he thinks that because he makes more money and pays more bills that I should give "ALL" of me because he feel he is giving "ALL" of him. He has gotten to the point to where he has made me cry because he makes me feel so bad about about it. He asks about it constantly, and when I say like, maybe... one day I will try it... he thinks that day is today, and get super upset! Then he even has left and gone out to bars because he doesn't want to hang with me because he thinks I am lame. BTW he is 27 and I am 22. We have been together for 4 years almost