Am I used for sex?

My boyfriend and I sleep together most every night, it's something we've both become acquainted to and I know, for me at least, that it's just not the same if he isn't in bed with me, I love his company. Recently we've started only having sex in the morning, it's not very personal and my head started convincing me that he was just sleeping with me at night to use me in the morning for his "morning wood", I know, silly... This was nonchalantly confirmed though through an awkward conversation we had, and I made an observation that we never have sex during the day, or at night. After that conversation the sex and intimacy went up quite a bit and we both were enjoying our new "do it whenever" mentality. As of recent, it's back to only the morning time and I feel like he's becoming distant now.. he doesn't really look at me, only touches me to get hard, and I have a gut feeling that my body has become a toy for him... not cool. I love him very much. I'm planning on marrying this man. I don't know what to say or even how to feel about this.. Help! 😣