Why does my boyfriend do this?

My boyfriend and I have been dating for 6 months; on the sixth month we both decided to take it a step further, and became a couple. We go to the Movies, The Winery, salsa dancing, The Museum etc. We share our dreams, goals, passion, stories, etc. He told me that he loves me, and we say it to each other often. However when I go to one of his jam sessions, (where he plays with his band) he behaves differently. He doesn’t embrace me the same. He’s hugs are like “church hugs” and he doesn’t talk to me much. No one from the outside looking in could tell we’re a couple. It makes me feel uncomfortable. Guys can you give me some advice?

Why does my boyfriend do this?
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