Is it morally acceptable to cut off contact with a friend?

[Dr. Drakken]

Well your friend is certainly gonig to wonder what the problem is.

It's probably not the best (or most mature) approach, and some will tell you it's pretty cowardly. Some will tell you you need to talk to your friend and let them know you want to discontinue the friendship. Some will say to just be busy every time they contact you.

Only you can answer this, though. If this friend is someone who's likely to get emotional and clingy when you try and talk to them, I'd just slowly cut ties with them. This is a situation where you use your own judgement.

Like I said, he/she will probably wonder what suddenly went wrong for you to cut all ties with them. If they don't do that, though, it shows how little you meant to them.