Boyfriend doesn’t want to see me

At the minute, me and my boyfriend are both working a lot up until Christmas. So every other weekend I work evenings because I get paid cash in hand. Then the weeks I don’t do that I stay round his. I really feel like atm, he always picks and chooses when he wants to see me. He just asks me to stay when it’s convinient for him and I feel like shit about it because I feel uncomfortable staying round his now. Fair enough he wants time to himself and so do I, but he always says in a way where he’s bored of me almost, how can I see what it really is?