Why so nervous...porn.

So I asked my boyfriend of two years which he's ten years older than me if I could use his iPad. He also is gone a few days at a time for work. He replied yea that's fine but when I went to go get it he freaked out and was asking for me to hand it over, well I already opened it and he had a porn site up which is fine it's only natural. Well he got all embarrassed and deleted it and then gave it back to me. He said he didn't want me going through it and saying oh what's this and critiquing everything. I myself am a very sexually person and he even says to me all the time you are the horniest  person I've ever met. Well I don't think that's a bad thing he should feel good about that. So what if I wanted to look through his porn and see what he watched or what he likes I'm always trying to make anything and everything better not to make him feel bad. So why does he have to at like a 13 year old getting caught? He later did apologize and felt bad for snapping on me but idk sometimes I feel like I bother him from being too horny all the time. Does anyone else have this problem?