my BiG dilemma

Don't get me wrong I've never have  intimacy any earlier than the first month anytime I dated. But it happens all the time that once I get to that point and finally I let go and I think I'm it starts ( which I feel completely right about it when it does) , all of a sudden immediately I never can spend a weekend with the person. What's going on that I don't understand?!? They always have plans ahead?!? Like all the weekends is someone's Birthday?! A friend is staying over?! A concert that is sold out now?!?! 

🤔🤔🤔🤔

Something I never can figure out...