Some people are just hopeless communicators and keep everything bottled up inside. There may be some feelings of doubt or whatever that he is having but is too scared to talk about so he chooses silence. Telling his friends that he has tried talking to you when he hasn't is shifting the blame over to you and not taking responsibility for his own actions. I'm not sure why he is discussing this with them in any case. I think you need to have a big sit down and lay the cards on the table. Ask him directly if he still wants to proceed with the wedding and while your at it tell him how you feel about the issue that he has lost interest in you and the reasons why. His answer to your questioning two days ago is evasive and obviously did not answer your concerns. If this is any sort of indication as to what he is going to be like in the future then I would be very careful about tying the knot. I have heard of a lot of people who have known each other for years, get married and then it only lasts a short time after that. Don't ask me why? Maybe being married is too much of a commitment for some people to handle and they prefer to know that there is an exit available. Anyway, get talking and try and resolve this asap. All the best x