Boyfriends text

Lately he's been different. And his priorities did change. It feels like I always come last in his life. He's changed after almost two years of dating. He would rather go out with his friends, work out, or fix his car than be with me. We both agreed that no matter what job we have we would request for Sunday's off, because it is "our" day. It's no longer like that anymore. We go to church and he sends me home, literally. He tells me I should leave because he's going to go workout. He keeps telling me he works out and wants to focus on working out to prove to himself and other people he is not a bitch? But what about him being that committed to our relationship than he is to the gym or fixing his car? He spends about 3-4 hours at the gym 6 days of the week. And he works 6 of 7 days. And on his rest day he has to fix his car and says it's not convenient for us to see each other. For our anniversary he asked me on a date, but he said we had to cancel because he just spent $500 fixing his car. He cancels dates so often now. And he doesn't seem to want to see me or be with me at all. When he use to always squeeze in some time for me or even take a break from the gym to be with me. But now he's always calling his friends to hang out. We were in a really happy relationship. Nothing went on, but why out of nowhere is he acting like this? And not to mention all of his friends are single, and they often tell him he needs a break from me. Could this be why? Because of his ego?