Flaky friends with benefits help?

My friend with benefits (27M), we hang out for sex every like 1-2 month/s, and many times when he mostly text me to arrange our meeting, he cancels it literally like last minute. We've been sexting and such, 4 days ago he asked me if i wanted to hang out later at night and i accepted. As we talked and such, 20 minutes later he said he is feeling tired and cancelled. This has happened many times before and i cannot understand what's going on. It's not that i dont understand that he may be tired, but literally that guy asks me to hang out if i want, and then cancels plans because he is tired. I cannot understand what's going on. He is flaky. He apologized and said he doesn't do it on purpose but its silly throughout the day to arrange for a f and then cancel it after like 10-20 minutes. Is he playing with me or something? I know for sure he is a person who cannot be on time. I want your opinions!

Flaky friends with benefits help?
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