But think vs. thinking vs. to think

A. I can't help but think you are being unfaithful.
B. I can't help thinking you are being unfaithful.
(X) C. I can't help to think you are being unfaithful.

1. Are all the sentences above correct?-- 'Myself'should not be used in any of them. C is wrong anyway,

2. Do they all have the same meaning?-- A and B mean the same.

Hi,

A. I can't help myself but think you are being unfaithful. OK.

In this type of construction, don't include 'myself'.

It's a rather literary and somewhat old-fashioned way of speaking. Quite stylish.

The use of 'but' suggests a contrast between the possibiltiy that you are not unfaithful and the possibility that you are.

Thank you very much. Can I also leave out 'but' as below?
I believe the word 'but' in the sentence only gives emphasis. Is this correct?

D. I can't help (but) think you are bing unfaithful.

Hi,

Yes. (I already told you that. )

Clive

Hi Clive,

Thank you, too, for your input and answering my additional question.

CliveA. I can't help myself but think you are being unfaithful. OK.
In this type of construction, don't include 'myself'.
It's a rather literary and somewhat old-fashioned way of speaking. Quite stylish.

I'm sorry, did you mean adding 'myself' makes it old-fashion

Hi,



The latter.



Clive

OK, thanks so much. You've been very helpful.