I have been blessed in the fact that while my people don't understand (and I don't expect them to) they are accepting.

So when they're begging to get together and I say I can't even fathom getting dressed, they arrange a movie marathon and everyone is required to wear PJs.

In return I guess, I commit to big / important stuff, and show up even if I'm convinced I'll hate it... If I try I'm usually wrong and end up having a good enough time.(As long as I don't over extend myself)

My people are a small group tho, family that double as friends, a bff and a bf, so maybe that plays a part, idk.

I know how hard it is to commit to stuff, and I try and avoid it too, but my belief is that I at least have to try, because if I am always unreliable, then what am I bringing to the table in the way of sustainability of the relationship... Yes I have BP, but does that mean my needs takes priority over everyone else's?
In my book no, unfortunately not in a healthy give and take relationship, sometimes I have to take one for the team. So yeah, sucks for me in one sense, but tends to pay off in others.

I'm in no way suggesting what anyone should do or believe, just sharing what works for me.

I'm sorry to hear your friend accused you of heinous things, hope you both cool off soon and talk it out, maybe even find a solution that suites you both.