Ummmm........I guess it would be bff and significant other (if you have one) I mean if it were me I would be absolutely okay with my bgf Jack to visit me late night and we can chat (but i don't think my bff would approve and I don't have a significant other)

Not really

I mean sure..at the start at least..

Sometimes or it also depends on the trust between them to set limits

Your own

Um if you have to set boundaries for your best friend because they like you or something then you shouldn’t be going anywhere with them if your dating someone

Nooooo??

No

I think it's up to the bestfriend

What?