Dopey guy is getting married in eleven days time. Bad thing for him is that he falls into the arms of another woman who, first of all, has sex with him on a boat. Not even talks, just has sex with him on a boat. Brilliant stuff.
He then becomes conflicted between his future wife and his "bit on the side". Parts where he contemplates between the two of them are filled with hilarious montage scenes. Last twenty minutes is basically a bunch of cheesy montages filled with great keyboard scores to bad Italian singing. I'll need to get those on Youtube.
Whole thing is not even treated seriously like most of these "affair" films do. Whole thing is hilarious. I know I've rated it 2/5, but still worth a watch IMO.