Lost interest in my boyfriend?

I have no idea what happened but we are in relationship for almost 4 months so it’s just a beginning, but for the past like 2 weeks I kinda feel nothing towards him. I used to be so excited to see him, to call him, text him but now I just don’t care. It just changed in a moment. He came to my house like 2 days ago and I couldn’t wait for him to leave, today I suppose to go to his house and when I think about it I’m just getting tired and upset. I always waited for Friday so I could see him but I just feel now empty. He wanted to kiss me last time and I just didn’t feel like kissing him back, and we used to have lots of sex but now if I think about it, I just want to stay home. I don’t know what the hell happened, Because I used to enjoy spending time with him and now it feels like punishment. And is just a beginning of the relationship so we still should be in this honeymoon phase but I’m already burnt out. Did anyone experienced something similar before?
Lost interest in my boyfriend?
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