I have been dating my boyfriend for about 6 months now. Everything is wonderful..he is attentive and caring.?

It could be that he takes the term 'I love you' very seriously and is not sure that this is what he is feeling. It's better for him not to say it if he is not sure. You've said it ... now just be yourself. Don't treat him any different. Give it time and enjoy the relationship. If he feels the same emotions one day he will tell you. Time to relax ... and stop beating yourself up for saying what you feel. You are entitled to your feelings ... and you cannot put a time limit on him. It's not right nor fair. Again, relax and enjoy the moment. Good luck to you.