<human>: Whenever I end a friends with benefits arrangement with a guy, he always become less interested in hanging out or will text much less often than before. In a couple cases, they got busy. While they did have more on ther plates, the reasons for their busyness (e.g. classes starting) didn't keep them from hanging out before. So, I'm beginning to feel like they didn't respect or value my time if sex wasn't on the table. I understand hanging out less often, but they would stop initiating contact or not ask to spend time together months after getting busy. 

I would love to date, but can't because of my family/their culture. So sex is the most intimate thing I can offer. Some wanted more and moved on when they met someone, but others weren't interested. Is this all I can reasonably expect?

Could you distill the essence of the text into 1-3 sentences?
<bot>: The guy friends I've had sex with get distant and disinterested when the sex stops. Is that common or normal?