Oh boy this is a tough one. That is a wide age gap. If you are really in love it wont matter who knows. You would want to share him with the world, instead of hiding. It would feel right.

As far as his feelings, he will get over it. If your not happy its time to get out. I would do it now before I get in deeper.

I dont want to be the bad guy here, but here I go.......... I lost my virginity with a 20 year old and I was maybe 16. When it came down to it, all he really wanted was a place to put it. It just seems you are to young for him. It seems he is keeping you around by putting in the I love you and I want to marry you. Kind like leading a horse with a carrot. He is saying things he thinks you want to hear to keep you around.

Somethings not right here. Just please be very careful. Your young and life is sweet right now. Dont miss an opportunity to enjoy your teens and 20s. They can be amazing and fun. Enjoy so you dont regrets. If this was meant to be then there would be no doubt.