There is nothing wrong if you are comfortable being a little close with your fiancé. But it is natural for you to feel uncomfortable the moment he crosses the line. A man, who has only one agenda on his mind, will hold you very tight and try to rub on or massage his hand on your body, whenever he touches you, or drop similar hints. On the other hand, if he genuinely likes you for what you are and your personality, he would be careful not to make you uncomfortable in any way.