the ECO could have used something similar as this as one reason to refuse you.. thou probably only if they had another reason to refuse you..
Paragraph 290 (i) requires that the applicant is seeking leave to enter the United Kingdom for marriage or civil partnership to a person present and settled in the United Kingdom or who is on the same occasion being admitted for settlement and paragraph 290 (iii) requires that each of the parties intends to live permanently with the other as his or her spouse or civil partner after the marriage or civil partnership. In support of this application, you have provided no information regarding your proposed wedding. I note that you have failed to demonstrate you have made an enquiries, plans or arrangements for your forthcoming marriage. Nor have you indicated the date you intend to marry. In view of this, I an not satisfied that you will marry within a reasonable time of your proposed entry to the UK. I have carefully considered the circumstances surrounding your application. I have taken into account the limited contact you have had with your fiance up to this point, the relatively short time frame you have known each other the lack of evidence surrounding the relationship and the lack of preparation and research for the proposed wedding. In view of these considerations, I am not satisfied that you met the requirements of paragraph 290 (i) and 290 (ii) of the Immigration rules.