<human>: Could you distill the essence of the text into 1-3 sentences?

So over the past year I've been in a relationship with a wonderful guy, but he's extremely secretive about his life and it makes me feel like he doesn't trust me or doesn't want me to be a part of his life.

We see each other 2-3 times a week because of our respective schedules and I always let him know every week what I'm up to so we can plan get-togethers. He, on the other hand, will let me know what days he's not free and that's the end of it. It's always been this way too and over the past year I thought it would change and he would open up but he hasn't.

For example, if I ask him what he's up to this week he'll say "stuff" or he has a "thing" on monday and "something" on tuesday and that's the end of it. He'll never elaborate on what he does ever. If I'm ever vague on what I'm up to he'll keep asking me questions and I'll tell him, but if I ever try to ask what he's doing he'll get really defensive and say that I have no right trying to get a "peek inside his brain" and that he's "not obligated to tell me anything" about what he does.

I've tried talking to him about how it makes me feel alienated and not a part of his life, but his response is basically to bad so sad because again he's not "obligated" to tell me anything...is this normal at all? This is my first long term relationship and I don't understand what I'm doing wrong.
<bot>: my bf refuses to tell me anything about his current life and keeps me in the dark about nearly everything he does when I'm not around and I don't know how to cope