there's not really a limit despite what i have been through, but i have most definitely learned to set boundaries so i'm not run all over. ie i've known you for 5 months so no, your on and off psycho boyfriend who is 10 years older than me is NOT going to stay at my house because he got kicked out. that's so wild to even ask (yes, i was actually asked that!) instead, i offer to find them alternatives and help in whatever extent/way i am comfortable with. my true friends (which is maybe like 3?) know i will drop anything at any time and i don't really care if others aren't as giving just as long as i'm not disrespected.
probably the dumbest thing that i've done for a person is "lend" them a ton of rent $ while struggling financially myself, because i proudly believed in the power of a promise. *eyeroll* then i got blocked bc he got himself a gf and she was deeply threatened by our friendship so she "made" him block me, he ended up going to jail for months for domestic violence, and desperately tried contacting me to "explain" - but at that point i figured he realized i was either the only one he could count on or the only one he could still attempt to use, and likely wanted bail money, so i never responded. at least i grew a pair and knew it was against my better judgement to associate with an abuser and a thief. LOL. like don't pay me back at this point, idc, honestly the hundreds were worth it to see his true colors before my life got worse. there is a whole lot more to that story but yeah, dumb thing to do, hard and important lesson learned. some canon event for sure hahaha like it makes me irritated but its more funny than anything now since it was years ago.