To be friends or not to be friends - that is the question
If you just need a few months space, but ultimately want to be friends with this man fine, but what if you can't bare the thought of friendship? The best bet is to be honest and tell him straight up how you feel. You don't have to declare your undying love, but explain to him that you have feelings and that you need space. If he's a nice guy (which we're assuming he is if you're in love with him) he'll hopefully agree and at least he'll know how your mind is ticking over. Perhaps he had no idea you liked him and now he's considering what it would be like to date you? Who knows what will happen unless you speak up.